Everyone was completely specious upon seen the Red Demon suspended in the air and Alvin just chuckled to himself.

"Look at that monster's corpse," Fishlegs gasped.

"I've never seen anything like it, it gives me the creeps," Heather stared.

Fishlegs shook his head. "Impossible… is that what they think it is."

Hiccup nodded. "It is, it's a demon."

Astrid sighed. "I guess that we missed a few over the last 3000 years."

"So they did really exist," said Fishlegs looking down at Hiccup and Astrid.

Hiccup looked at him. "Astrid and I were on the front lines when we fought them?"

"And it gets worse, because this is nothing more than a foot soldier one of the lowest ranks of demons," Astrid added.

Skull then landed on Hiccup's shoulder. "I do sense a similar magical power emanating from this creature, it matches the same presence I sensed within Dale and the New Generation. It is the very root of this evil."

"20 years ago, when these remains were first discovered deep in the Fairy King Forest, this journey began," Alvin explained.

Fishlegs eyes widened and Snotlout just remain quiet.

"All that I have accomplished has been made possible by this Red Demon, both the old generation and new, all the experiments gave us those compatible with demons blood, the partial deciphering of the magic system," said Alvin with a gleam in his eye. "And now this!"

He then extended his hand and immediately the markings produced dark tentacles then immediately dashed towards the Sins. Hiccup, Astrid and Heather blocked the attacks with their weapons while Fishlegs just avoided it and Snotlout allowed it to penetrate his stomach.

"At last I myself will the power of the Red Demon!" Alvin announced victoriously.

Snotlout smiled at Alvin. "If the Red Demon's powers are your ace in the hole, your best bet is to fold and walk away from the table," he said as he immediately dashed towards Alvin still the tentacle penetrating his stomach. He then immediately slammed his hand right on top of Alvin's head. "Because I'm the one that killed that fat freak!"

Snotlout who himself hard that the impact caused the rock beneath them to cave in and he immediately fell into a deep cavern.

He then turned and walked away from the large hole.

"Snotlout?" said Fishlegs looking at him with a concerned look.

Snotlout then grabbed his mace and immediately used his magic to disintegrate the head of the Red Demon.

Fishlegs then floated towards him. "Snotlout, you really kill that thing 20 years ago?"

Snotlout nodded. "That was the same demon that killed Shanna and me."

Fishlegs just stared at him.

Hiccup and the others were leaning down towards the hole which was so deep they can even see the bottom of it.

"Looks like there's a section of tunnels right beneath the capital," said Hiccup.

"We should go after Alvin before he can make an escape," Astrid advised.

Hiccup nodded in agreement. "Let's go."

Heather could tell that there was no way she would fit inside the hole. "I don't think I can fit down there."

"In that case just stand guard," said Hiccup as he jumped into the hole.

"All right, but do try to be careful," said Heather as the others quickly followed him.

They soon reached the bottom of the hole and found themselves in complete darkness.

"Okay, the good news is we reach the bottom, but the bad news is we can't see our hands in front of our faces," said Hiccup's voice.

"Snotlout do you really have to pick your nose?" Astrid's voice groaned discussed.

"Great, I get only one of us can see," Snotlout's voice grumbled.

"Chastiefol! Seventh Configuration: Luminosity!" said Fishlegs' voice.

Suddenly the entire cave began to glow and Fishlegs stood there with a luminescent, ringed sphere in the palm of his hand.

"Good work," said Hiccup.

Astrid then bent down to the ground as she noticed something on the floor. "I see a trail of blood and it's fresh."

They immediately began to follow the trail deeper into the cavern.

"Who knew there was such a huge cave down here," said Fishlegs as he looked around the cavern walls. "It looks like that it's been downhill for thousands of years, but I don't see any indication that anyone's been down here for long time."

Hiccup frowned. "Then whatever has been down is long gone." Though he still had a feeling in the back of his skull that there was something not right here. "I just want to know what this place is."

Fishlegs then immediately turned ahead of them. "Hiccup!"

They immediately turned and saw Alvin standing before them next to a podium.

His eyes then immediately turn to Snotlout. "My gratitude Fox Sin Snotlout for making this possible. If not for you I would never have been able to acquire the power of the Red Demon."

"I'm always happy to help," Snotlout grumbled.

"It has been a trying process, seeking bodies capable of withstanding it," Alvin sighed. "For unlike the blood of the Red Demon, this one's blood will bring instant death to anyone unlucky enough to receive it."

"'This one?'" Hiccup frowned.

Fishlegs then saw something directly behind Alvin. "There's something behind him."

He then brought Chastiefol closer towards Alvin and their eyes widened to what it's like to shine upon.

"I have a theory of sorts, the body that is compatible with the magical power of its kinsman, the Red Demon, is the one that can tolerate the reaction to its blood," Alvin smiled.

All of them just stared, because right before them was a another demon, but this one was for more lanky than the Red Demon and it arms and legs were longer, its skin was also grey and it didn't have any horns and it had wings on its back.

"This is…" Hiccup breathed.

"The Grey Demon, whose remains were discovered here several years ago," Alvin smiled. "Is it is amazing? There are so much that we don't know about the demons that came here before us."

He then picked up an injector and injected it into the Grey Demon's corpse. "However, as for this particular specimen, I know that it is a race far superior to its Red brethren. I had hoped to experiment further before proceeding, but if my hypothesis is correct…"

Then to their horror he immediately injected himself with the blood.

"What's he doing?" said Fishlegs horrified.

"Are you mad?" Hiccup yelled.

"If I can take the Red Demon's blood then I can take this as well!" Alvin roared.

Then suddenly he began to cringe in pain and began screaming as if his body was being torn apart from the inside out.

"Look at him, is he?" said Fishlegs.

His body then began to glow and seconds later his body returned back to normal, though he was still glowing.

"Calder, my friend, if only you lived to witness this with me," he said.

Snotlout then immediately charged at Alvin and raised his mace.

Hiccup looked at him horrified. "Snotlout, stop!"

Snotlout ignored him and slammed his mace on top of Alvin. "How do you like that?"

Then suddenly Alvin began to glow even more brightly and when the light faded Snotlout's top half had been completely disintegrated.

Alvin himself had transformed yet again, he was no longer wearing any armour and now he was not as large, in fact he was longing lanky like the Grey Demon. He now had grey skin on his upper body, and black skin on his lower body. Horns have sprouted out of his head, and a pair of wings out of his back. His eyes are now yellow and red, with black veins above and below them.

Fishlegs looked at Hiccup. "So is that still… him?"

Hiccup shook his head. "No way. Whatever that thing is it's not human anymore."

Up on the surface the Dragon Knights just stood there waiting and most of them were still a bit bewildered upon the revelation that the Seven Deadly Sins were innocent and the Inquisitors were the ones that were guilty.

"It's so quiet, do you think the battle is over now, sir?" said a Dragon Knight as he looked towards Gilthunder.

"Lord Gilthunder, is it true, sir, that it was Lord Alvin who transform the New Generation into monsters?" a second Dragon Knight asked.

"I refuse to believe that, to think that our two Inquisitors were involved in for framing Seven Deadly Sins."

Gilthunder looked at them and smiled. "Whether they were not, it was the Sins who just saved the New Generation, remember?"

A Dragon Knight nodded. "That's right, it was Snotlout the Fox Sin of Greed along with that boy."

"That boy is Fishlegs," Gilthunder explained. Many the Dragon Knights stared at him in shock. "I apologise, for not telling you sooner. Nevertheless I swear to you that it's the truth."

"You know we haven't quite forgiven for nearly killing us," said Ruffnut.

"Yeah, don't you think you went a little overboard?" Tuffnut asked.

Gilthunder looked at the twins. "I knew what I was doing, I was only using so much force as not to arouse suspicion."

"Good to know, but fill us in next time we are on your side," said Ake looking annoyed.

Gilthunder just smiled. "I'm sorry, I had to maintain my cover and telling you would have arouse suspicion."

Then suddenly the entire ground shook violently and a massive dust cloud emerge from the base of the Research Building.

"What's going on?" Ake gasped.

"That blast," Gilthunder stared.

Suddenly the dust crowd expanded and they saw Heather slamming into the ground as if she had been tossed. A few split seconds later they saw the rest of the Sins had emerged from the dust cloud and looked as if they were retreating from something.

"It's the Seven Deadly Sins!"

They then turned their attention to the dust cloud and saw emerging from it was Alvin, though they barely recognised him in his new form.

"It can't be…" Gilthunder stared. "The source of this magical power… don't tell me it's coming from… Alvin?"

Ake stared Alvin. "How you saying that monster."

"But it does resemble him," said a Dragon Knight.

"What has he done to himself?" said Ruffnut shocked.

"I don't think we want to find out," said Tuffnut.

Toothless was currently with both Ruby and Sapphire. Ruby was still line down the ground gravely injured and Sapphire was tending to her injuries.

Toothless looked at Alvin. "I don't know what happened to him, but it looks as if he's dabbled into force as he barely comprehends."

Alvin's gaze then fell upon Ruby.

"Watch out!" Hiccup yelled as he dashed towards Alvin and raised Endeavour. "He's going after Ruby! Don't let him near her!"

He then slammed his blade up on Alvin, but it looked as if he just absorbed his attack on a split second later he punched him so hard that he crashed into the cliff wall several hundred yards away. Astrid then appeared behind him and attempted to strike him down with Bloodfury which was now growing intently.

"Raging Crush!" she roared and swung her axe.

However, Alvin immediately vanished and reappeared directly behind her, she quickly raised Bloodfury just as he struck her. The attack was so strong that she was sent crashing into the ground and created a new crater in the process.

The Dragon Knights were now surrounding him raising their weapons.

"Inquisitor Alvin, please you have to stop!"

"Y-You are under arrest for the crime of betraying the kingdom!"

Alvin just stood there motionless and immediately black orbs that look like snow began to cover his entire body. "Dark Snow!"

He then spread at the orbs around the entire field and everyone just stared at them in confusion as they floated down towards them.

"What is this stuff?" said a Dragon Knight curiously

Then one of the dark flakes landed on his arm and immediately his entire body turned black and collapsed.

Ake quickly caught him. "Are you all right?" he asked and then he noticed that he wasn't breathing. "He's dead!"

The same thing was happening to the other Dragon Knights that came in contact with the black snow.

"Don't let the Dark Snow touch you, it's instant death!" Gilthunder ordered.

Two Dragon Knights were doing their best to avoid getting touched by the snow.

"It's an impressive technique," said one of them.

"Yeah, but it's pretty easy to avoid," said the other.

Then suddenly their heads were slammed together by Alvin and with one good twist he decapitated them. Apparently the Dark Snow had no effect on him, though that was not surprising considering that he was the one who cast the spell. He then began to dash across the battlefield no doubt looking for more victims.

Sven then appeared directly in front of him. "I don't believe, I've shown you this move before! Overpower!"

Then suddenly Alvin stopped right in his tracks, it was as if he was frozen in time.

"He's frozen in place!" said a Dragon Knight.

"Everyone, attack him at once!" Sven order then slammed his spear into Alvin sending him flying. "Samson!"

Samson got his greatsword at the ready. "Devastating Slice!"

He then struck Alvin in the back with his blade sending him up into the air.

The twins and immediately jumped after energising one another.

"Twin Sword Stance!" they yelled and dealt some devastating slashes without twin blades.

Balder then got ready for his attack. "This one is for Ase! Killer Iceberg!"

Alvin then was then pummelled by a barrage of icicles. "Blizzard Axle!" He then created a powerful blizzard that pelted Alvin and force him to crash into the ground.

Balder had yet to recover from his encounter from Ase and spat out some blood.

Gilthunder, Ake and Gabrielle then got ready for their attack.

"All right, we can take it from here," said Gilthunder as he charged lightning into his sword.

Gabrielle then raised her lance and began to form a massive fireball above her and fired a bolt large of smaller fireballs from it. "Brilliant Detonation!"

Ake then raised his lance and created a massive tornado. "Rising Tornado!"

Gilthunder then unleashed a powerful bolt of lightning. "Iron King Iron Hammer!"

The free attack combined and immediately created a massive explosion that could be seen across the entire capital. This in turn caused rubble to be pelted in all directions and Toothless quickly opened up his wings and shielded Ruby and Sapphire.

Ruby then began to regain consciousness.

"Did we get him?" Samson asked.

Gilthunder had a feeling that it wouldn't have been that easy. "I'm sure we cause some damage, but do not let your guard down."

He was right, because when the dust cloud dispelled Alvin was still standing and it looked as if he hadn't taken any damage.

"Impossible! After all those attacks there is in a scratch on him?" said a Dragon Knight horrified.

"Nothing from this world could have walked away from something like that," said Ake.

Gilthunder remained focused. "Save your assessments for later, we are all that stands between this beast and our precious kingdom! The Dragon Knights are equal to 1000 men and we will not fall to one!"

The other Dragon Knight then cheered.

Ruby then regained consciousness and saw the battle unfolding, though she appeared to be quickly aware of what was going on.

"Run," she said as she lifted herself up.

Sapphire looked at her relieved. "Ruby."

"He's too strong," Ruby continued. "I don't want anybody else to get hurt, so please. Please just… just run!"

The Dragon Knights then immediately pounced upon Alvin. The Dragon Knights were unleashing everything they had, but every single one of their attacks just seem to bounce off his skin. Alvin then raised his hand and immediately sliced through about a dozen Dragon Knights, cutting most of them in half. Gilthunder had managed to land a hit at the same time that Alvin struck them, but Alvin had struck him in the back and blood began pouring out of it.

Alvin just stood there completely unharmed, but then the ground beneath him rose up into the air in the form of a star. Heather was behind it using Gideon by rising it up into the air creating a star-shaped column.

"Rising Meteor!" she yelled. She then immediately turned towards Fishlegs as Alvin was sent spinning up into the air. "Now Fishlegs!"

Fishlegs extended his hand and prepared to transform Chastiefol. "Spirit Spear Chastiefol! Fourth Configuration—"

However, before he had a chance to attack Alvin's eyes glowed. "Dark Nebula!"

Then suddenly a massive force of darkness shattered Heather's pillar and speeded down towards them. It was so powerful that it caused the ground to shake and all of them were hit by the shockwave and send them all flying.

Toothless did his best to shield Ruby and Sapphire from the shockwave, but he was sent flying backwards. The attack continue to expand and would have hit Ruby, if Hiccup hadn't quickly shielded her with his back.

The attack had been devastating causing many to be knocked out cold, some were even dead.

Snotlout looked up at the others weakly as he body began to steam. "Good job guys, way to show who's boss around here."

Alvin then immediately land on top of him slicing his body into and then he began walking past everybody, who are either unconscious or dead.

"Like lambs to the slaughter," he said.

He then noticed out of the corner of his eye that the only person still standing was Hiccup, but he was gravely injured. He had shielded Ruby from his attack was practically on the edge of death, because of it.

"I admit I'm impressed," said Alvin.

Ruby stared at him. "Sir Hiccup, I—" Hiccup then collapsed right in front of her and she looked at him worriedly. "Sir Hiccup?"

Hiccup looked at her weakly. "Ruby… run away."

Ruby shook her head. "I can't. I won't leave you."

Alvin then raised his hand and began to form the same black snow was before. "Well, Hiccup, you are a more dangerous man then I gave you credit for."

Gilthunder was barely conscious as he witnessed Alvin performing his move. "That technique… from before."

Alvin then clenched his fist in the black snow began to merge right in front of him. "Allow yourself to be swallowed by the darkness and to be destroyed."

Gilthunder tried to pick himself up. "No. Hiccup! No matter what happens, don't don't let it touch you!"

The other Sins were no better condition were badly injured.

"Hiccup," said Heather weakly.

Astrid was practically buried in rubble. "No!"

Snotlout had managed to reattach his body, but he was still recovering. "Hiccup, if you lead anyone but me take you down I'm going to kill you!"

Ruby looked at Alvin. "If you're going to kill him kill me too!"

"Now! Dead End!" said Alvin and fired the spear of darkness directly towards Hiccup and Ruby.

"Sir Hiccup!" Ruby cried.

"There isn't a soul alive who can save you now," said Alvin.

Toothless then appeared rather nowhere placed himself between them and Alvin's attack. "No one, but me!"

Hiccup looked at him horrified. "No, bud! What do you think you're doing?"

Ruby looked at him pleadingly. "Please, don't!"

"Sorry, Hiccup, but someone needs to save you so that you can say Ruby and everyone else," said Toothless as he stood firmly without a twinge of fear. "It's our only chance."

"Get out of the way!" Hiccup yelled.

Toothless looked at him and smiled. "You're my best friend, you would have done the same thing for me. I'm pleased to have ever known you."

Then Alvin's attack consumed him and seconds later there was a large explosion. Hiccup quickly shielded Ruby from the blast and when the dust finally settled they looked up. They saw Toothless just standing there, it was hard to tell whether he was still alive due to his black scales, but he remained completely motionless.

Hiccup got to his feet in shock. "Toothless, no!"

Toothless' body then collapsed like a dead lump.

Tears began to form in Ruby's eyes as she stood up. "How… how this happen?"

"So the dragon sacrificed his life to save yours," said Alvin emotionlessly. "That is what I call bad luck."

Hiccup clenched his fist. "Bad luck? Anything but…"

Ruby was now hugging Toothless' motionless body. "Toothless, please wake up. Just say something, anything! You… you can't leave us, not like this!"

Astrid just stared at the scene, unable to believe her eyes. "This can't be happening, it can't be happening."

Alvin looked directly at Hiccup. "You won't be getting another chance."

Hiccup glared at him. "Alvin… that's it, I'll stop you no matter what it takes!"

Then suddenly there was a bright glow directly behind him and an invisible force struck Alvin pushing him back. Suddenly a beam of light shot into the sky and every single Dragon Knight stared at it, wondering where it was coming from.

Alvin's body was beginning to crumble. "Where is this magical power coming from?" He then looked at when he realised what was causing it. "Could it be?"

Gilthunder found his strength returning and saw dozens of lights shining down on top of him.

"What's going on here?" he frowned. "Could I have already died?"

"No," said a voice.

Gilthunder looked up and saw Sapphire. "Sapphire is that you?"

"Events such as these have happened before, but I'll admit not at this magnitude," said Sapphire. "When father was badly injured falling from a tree while trying to rescue her and when our sister Amber was hurt protecting her from a collapsing bridge… she still hadn't realised, she had no idea how much magical power dwells inside her."

Suddenly all around them flowers began to bloom around the rocky landscape.

The beam of light shone so brightly and soared so high that it could be seen from miles and a certain young woman with an injured leg watch from a distance.

"Ruby," said Amber, who apparently was alive and well.

Alvin grimaced. "What a bother, it appears the blood of a druid priestesses veins has awakened. A parcel of the angels."

Everyone turned towards Ruby, because she was the source of the strange mysterious light. Her right eye was now revealed to everyone, but it wasn't human instead it was bright orange with a strange symbol around it.

"What happened to Ruby's right eye?" Heather stared.

"She's so powerful, I can hardly believe it," said Fishlegs.

Astrid just looked at her. "Her power has awakened, Toothless' death must have allowed it to tap into the magic power that lies deep within her."

Skull was observing the battle from the sky. "Ah, now that explains how Hiccup and the good doctor healed so quickly and should in a short amount of time from fatal wounds."

All the Dragon Knights stared at Ruby in wonder and amazement.

"Princess Ruby?" said one of them stunned.

"What's going on?" Gilthunder asked.

Ruby looked directly at Alvin. "I am so disappointed in you in what you have become Alvin. My father, he put so much faith in you because you were always so kinder and gentler than anyone else, because you have the trust of the kingdom and of the Dragon Knights. What happened to that person? You have betrayed so many people and have killed countless others, what did you want so badly that it meant sacrificing yourself?"

Alvin just stood there. "The resurrection of the demon race and to take my revenge on the four clans that sealed us away after the ancient war."

"Revenge?" Fishlegs blinked.

"What's he mean?" Heather frowned.

Hiccup's face grimaced. "This is an Alvin who's talking anymore. It's whatever is inside of him."

"All I need now is to collect the blood of an apostle of the angels," said Alvin.

He then immediately raised his arms in a cross formation above his head and began to channel a large amount of dark magic power. Everyone immediately realised what technique he was about to use, the same one that put them in such a difficult position.

"Not good!" Snotlout yelled.

"I can't take another attack," Fishlegs panicked.

"It will kill each one of us," said Heather.

"Don't do this, you can't," Ruby pleaded.

"Dark Nebula!" Alvin announced and unleashed a massive amount of dark magic towards them.

"I will not let you hurt anyone else!" Ruby screamed.

Then suddenly she unleashed a brilliant blight light from her body and in immediately clashed with Alvin's dark magic. Alvin was clearly surprised and got a bit more of a shock when Ruby's attacker began to shatter through his dark magic and consumed him in a brilliant bright light.

Ruby's attack also had another side-effect, everyone in the gorge suddenly found their wounds completely healed. Then suddenly the entire wasteland was covered in beautiful flowers and soon formed a beautiful meadow with petals falling all around them.

Amber watched the capital which looks as if angel-like wings were covering the entire city.

"What's that light settling over the capital?" she wondered.

Ruby's magic in just heal the Dragon Knights, but everyone else in the town. Immediately all the civilians found that their wounds were completely healed as if by magic.

"What's happening?"

"Oh my goodness, look!" said a woman pointing at the strange light above them.

"All of my wounds are vanishing!"

"Amazing!"

Ruby then apparently noted for the first time the strange light that was hovering over the entire capital.

"This light… where is it coming from?" she wondered and then began looking for Hiccup. "Sir Hiccup?"

"It's okay, I'm right here," said Hiccup.

Ruby immediately turned on to her relief she saw that Hiccup and the other Sins were standing over her with their wounds completely healed.

"Sir Hiccup! Everyone," she said stunned and a little confused. "But what happened to all of your injuries? How…"

Heather bent down towards her. "Ruby, you mean you really don't know what's causing this?"

Ruby looked at her confused. "What?"

She then saw all the Dragon Knight were picking themselves up and gaze at the miracle that was surrounding them.

"I thought I was dead."

"It's a miracle!"

Ruby then immediately turn to Hiccup. "What about Toothless? Is he okay too?" She then followed Hiccup's gaze to just Toothless' body which was still line on the ground and began to cry. "No. No."

Toothless wasn't just the only one that was dead, many of the Dragon Knights were dead as well and their comrade grieving over their bodies.

"Open your eyes, please!"

"Come on."

Sapphire then cried into Gilthunder's shoulders. "She can't revive the dead, Gil."

Gilthunder looked at her. "Sapphire, please, I need you to stay by Ruby's side."

Ruby was still crying and then immediately collapsed. Fortunately, Hiccup caught her and she felt extremely exhausted.

"Ruby?" Sapphire cried as she rushed over towards her little sister.

"Take her," said Hiccup handing Ruby over to Sapphire.

Hiccup then turned his gaze and everyone saw Alvin rising to his feet. His body was still smoking and it appeared that Ruby's attack had caused some damage, but it looked as if he was recovering.

"What an impudent little girl," he said. "I should have taken her blood and disposed of her before she realised her potential."

She then began to make way towards Ruby and immediately the Dragon Knights stepped forward blocking his path. However, while their stamina was recovered they will get extremely low on magic power.

"Don't get me wrong, I'm glad we're not dead any more, but it appears we are not in any better position than before," said Sven.

"Stand your ground," said Gilthunder as he held a firm grip on his sword.

A Dragon Knight then looked at him fearfully. "But Sir, we don't stand a chance against that thing!

Alvin continued to walk towards them and Gilthunder had to agree with the Dragon Knight. He then felt his entire body shaking uncontrollably with every single step Alvin took. 'Damn it, why won't my body stops shaking?'

He then looked directly at Alvin and was paralysed by fear. Alvin gave a small smile and immediately dashed towards Gilthunder, but before he could land a hit Hiccup appeared from out of nowhere and punched him hard in the face. That punch was powerful enough to send him prowling into the ground, he then dug his claws into the ground and came to a stop.

But no sooner had he stopped than Hiccup appeared in front of him and slammed another fist right into his chest. At first it didn't seem to faze him, but when he looked down he saw that there was a massive blow dealt to his chest and then he collapsed.

The Dragon Knights just stared at him in shock and watched as the other Sins gathered around him ready for what would seem to be the final battle.

Hiccup then clenched his fist. "Never give up! Be strong, because the Seven Deadly Sins are here!"