With Takato, Guilmon, Rika, AquaVeemon and Beelzemon now in control of Datamon's yacht, Beelzemon took command of the ship and sailed it into the cave.

Looking around the cave, AquaVeemon said. "So this is the place he was talking about. I wonder what we'll find."

And venturing deeper, the group saw a place to park, as well as a familiar vehicle, causing AquaVeemon to then call out as she pointed. "Over there! That's the Mekanorimon that the masked Digimon used to get away!"

Indeed she was right, as the group could see tied to the dock was indeed the Mekanorimon, a good sign they were on the right path.

Parking the boat aside the Mekanorimon, all but Beelzemon got off the boat and boarded the dock.

"So you guys are really gonna go through with this?" Beelzemon asked, earning a nod from Takato, who told him. "This is not just about Renamon, but the Uroboromon Project as well."

"I guess there's nothing I can do to stop you. I will call Hypnos and try to get you guys some backup. Try not to get yourselves killed." Beelzemon replied as he put the boat in reverse and began to leave.

"Don't worry. Nothing has killed me yet, not even you." Guilmon then said with a smile, making Beelzemon smile back, before driving away and giving them a final good-luck salute.

With Beelzemon gone and their answers within the cave, the group began to head off.

However, something was bothering AquaVeemon.

"That name Datamon said before, Lilithmon..." She said, causing the others to look at her and for Rika to ask. "You've heard of her?"

AquaVeemon nodded.

"She's one of the Demon Lords, whose power was stripped by the Digimon Sovereigns, but what she is doing here is unknown." AquaVeemon replied, only to then ask. "Do you think she could be connected to Datamon?"

"If there is a connection, what does that mean for the Digital World?" Takato replied as he and the others made their way through the cave, feeling there were more questions than answers, which caused Guilmon to say. "I'm not sure, but if we keep going, we're bound to find out."

Moving through the caves, sunlight streamed through several holes in the ceiling, giving the Tamers and Digimon plenty of light, more than enough to see that deeper down in the depths of the cave were the ruins of an old temple.

Staring down at the temple, AquaVeemon said in a tone of awe. "Amazing. I never knew such a place existed."

"I don't care about the scenery. I just hope Datamon was telling the truth when he said we'd find answers in this place." Rika said in reply, still unsure if a psycho like Datamon could be trusted.

However, Rika was unable to put further thought into Datamon's words, for she and the others then heard small cracking noises, making them turn to see several KoDokugumon dig up and emerge from the ground, before they rushed at the Tamers.

"They're infected!" Takato warned, just as one lunged at him, only for it to be sliced in half when Guilmon got before his Tamer and attacked with his claws.

"What isn't?" Rika questioned in reply, ducking under a KoDokugumon that tried to attack her, resulting in it being thrown it off the edge of the cliff and to its demise.

But despite the fact the KoDokugumon were quite weak and could be taken down with a single attack, more KoDokugumon emerged from the ground and began to overwhelm Takato, Rika, Guilmon and AquaVeemon until the four were several steps from the edge of the cliff.

Looking back, Rika saw they were almost close to falling off the cliff.

"Guys we have to do something before we fall." She said, making Takato nod in reply, before an idea came to him.

"Jump!" Takato called out, shocking Rika and AquaVeemon as he and Guilmon leapt off the edge.

"Digi-Modify! Gate of Destiny activate!" He then announced as he withdrew his D-Power and said Digimon Card, slashing it through his D-Power, which caused a portal to appear and open beneath him and Guilmon.

And seeing Takato and Guilmon enter it, Rika and AquaVeemon, placing their trust in the brunette then leapt for it, falling down and into the gate, which closed up and vanished after the girls had fallen within.

When they went through the other end of the portal, Takato and the others all looked around and saw they had arrived inside the temple ruins.

"Good. We made it inside." Takato commented, before saying in a serious tone. "But make sure to watch your back. We don't know what kind of traps have been set for us or what Plagamon infested Digimon are hiding around."

"Got it." Guilmon replied, while the girls nodded, before all headed off, following the Gogglehead through the ruins.

"Over there!" AquaVeemon then called out, rushing over to a stone door and causing the others to follow.

"It's locked." Takato said, examining the door, while Guilmon tried to plunge his claws underneath it and push the door up, with no luck.

"But from the looks of it, we need two stone tablets to open it." AquaVeemon pointed out, gazing at the stone door's image, which was of the yin/yang symbol, just as Guilmon gave up on using sheer strength to open it and saw two circular holes in the stone door.

"And what? We're just gonna find them lying around?" Rika questioned, causing Takato to point out. "It's been that way so far."

With no other options but to look for the stone tablets, Takato and the others walked away from the altar and down a long hall, only to stop when they saw two Knightmon, standing next to a big structure with a glass in it, which they then tilted and caused the sun to shine through it, to which the glass focused it like a magnifying glass and sent a tangible beam of heat through the ruins and at the Tamers.

But luckily, all four managed to avoid the beam by taking cover behind the various cracks in the ruins around them.

And while they were close to being killed, AquaVeemon had to comment on how impressed she was.

"They appear to be focusing sunlight into a laser-like beam. It's quite impressive if you think about it." AquaVeemon commented, only for Rika to point out. "Only problem is we'll get fried like ants if we get caught in its path."

"Then leave this to me." Guilmon said in reply, stepping out of the niche he had taken cover behind and let his maw fill with flames.

"Pyro Sphere!" Guilmon announced, spitting the flames at the Knightmon in an attempt to take them down and destroy their ancient magnifying glass.

However, even though Guilmon had grown more powerful over the years, his flames were no match for the Knightmon's shields, which dispersed the second they came into contact.

And with Guilmon out in the open, the Knightmon let another beam out, aimed at Guilmon, who was almost incinerated, if Takato hadn't grabbed his hand and quickly dragged him back behind the ruins.

"Looks like we're all going to have to be more careful if we want to survive." Takato commented.

But noticing the beams had a duration before fading, Takato could see it would allow them to continue through the ruins before the rays could burn them.

"Rika, AquaVeemon." Takato called, getting the attention of the girls, who had taken cover on the other end of the hall.

"The next time that the rays fire past, make a run for it." He told them, causing Rika and AquaVeemon to nod in reply and lie in wait.

And after another beam shot past, Takato and Guilmon emerged.

"Now!" Takato called, running alongside Guilmon, Rika and AquaVeemon, down the hall and past the ancient magnifying glass-like device.

But escaping one trap, the Tamers found themselves in another, for the Knightmon jumped down and landed on the sides of the four, blocking their paths, before the Knightmons drew their Berserker Swords, showing their desire to battle.

Turning to Guilmon, Takato asked. "Ready boy?"

"You bet." Guilmon replied, while AquaVeemon smiled at Rika and gave her a confirming nod.

"D-Armour activate!" Takato and Rika then called out, combining their Digimon's power and very being into their D-Armour.

And with Guilmon and AquaVeemon not only fused with them, but once again sharing their power, Takato and Rika were ready to take on the Knightmon.

Upon seeing Takato and Rika fuse with their Digimon, both Knightmon remained focused on their prime objective, killing, to which both held their blades into the air.

"Berserker Sword!" Both Knightmon exclaimed, bringing down their blades and creating two blasts of energy to shoot off of their weapons and at the Tamers, who managed to avoid the attacks, jumping high into the air and allowing them to prepare for the fight as both withdrew a Digimon Card and yelled out.

"Digi-Modify! Digmon's Drill activate!" Takato announced, gaining the power of the Digimon of Knowledge in the form of a drill on his right hand, which span at a rapid pace.

And with his new weapon, Takato leapt down and slammed it against the first Knightmon, who brought his shield up to defend himself, causing sparks to rain off both the drill and shield as a clash happened between the pair.

But with one free arm, Knightmon swung his blade at Takato, who was forced back and then had to act fast, for the Knightmon began to slash at him over and over, trying to carve into Takato and kill him.

"Digi-Modify! Grey Sword activate!" Rika followed up, causing the power of the Card to take form around her arm in a the shape of a familiar Digimon's head, WarGreymon.

"Alright tinman, it's time to see who the better swordsman is." Rika said as a blade emerged from the mouth, to which the red haired girl then charged at the second Knightmon, beginning an epic clash of blades.

As Rika and the Knightmon continued to battle, clashing blades, exchanging blows and trying to take the other down, Rika was determined to defeat Knightmon so she could stop Uroboromon and see if Renamon really was alive, while the Knightmon was determined to see Rika decapitated and to see her guts spilled all over the floor, to which the Knightmon brought his blade down upon Rika, who managed to protect herself with the Grey Sword.

However, she could feel Knightmon forcing his weight upon her weapon, causing her arm to slowly give in, while the Grey Sword started to move down to Rika's head.

But even though the Knightmon seemed to have the upperhand, Rika still had something that the Knightmon had lost, free will and the ability to think on her own instead of acting on instinct, to which she quickly sheathed the blade of the Grey Sword, rolled to the side, catching the Knightmon off guard and causing Knightmon to plunge his Berserker Sword into the ground.

And now that Knightmon was open, Rika drew the Grey Sword out again and plunged it into Knightmon's chest, stabbing through both his armour and the Plagamon within him, causing him to collapse in defeat and disperse into Data particles seconds later.

-With Takato-

The brunette continued to avoid Knightmon and his Berserker Sword, even trying to strike back at him with his Digmon Drill, only for Knightmon to block against every strike.

"It's no good, boy. His armour is just too tough." Takato said to Guilmon, who appeared beside Takato in his spirit form.

"I think I might have a way to break through it." Guilmon replied, before he told Takato. "Before the mission, I was working on a new move I call the Quake-a-lator, it allows me to drill through most obstacles with my claws by launching myself and spinning at a quick pace. If I share this move with you, I'm sure we can take Knightmon down."

"Alright then. Let's give it a spin." Takato said in reply.

Placing his complete trust in Guilmon, Takato closed his eyes, opening them a second later, revealing they had changed to Guilmon's yellow eyes and showing another successful function of the D-Armour.

With a human and Digimon who held a great deal of trust for each other, they could fuse their minds as one and share information.

In this instance, Guilmon had shared how to perform his Quake-a-lator.

Jumping away from the Knightmon, Takato saw his chance, to which he jumped at Knightmon, while spinning as fast as he could, causing him to slam hard into the Knightmon, who was showing signs he was having trouble holding Takato back.

And with the added drillpower, it allowed Takato to then tear through the Knightmon, defeating him.

With both Knightmon defeated, Takato and Rika deactivated the powers of their Digimon Cards and approached each other.

"Good job." Takato said to Rika.

"You weren't too bad yourself, Gogglehead." Rika admitted, before saying. "And look what we found after beating that buckethead."

With that said, Rika held out her hand, revealing a small stone tablet, which was a white circle, causing Guilmon to say in reply. "One down, one to go."

"Actually it's more like one down, none to go." AquaVeemon pointed out, pointing over Takato's shoulder, where they had defeated the Plagamon infected Knightmon and saw it too had dropped a tablet, one that was a black circle, which Takato recognised as the dark side of the Yin.

Taking the dark emblem, Takato and the others headed back, where the brunette inserted the circles in their respective keyholes, unlocking the door, which then slid open, revealing beyond the door was a room with an Angemon statue and Devimon statue, with each holding a chain.

"Is this it?" Rika asked, before saying, annoyed. "We risked our butts to open a storage room."

"Hold up." AquaVeemon said, noticing something between the statues, causing her to break her fusion with Rika, create a small amount of water and threw it at the wall, which caused the dirt and dust all over it to slip down, revealing DigiCode was hidden behind it.

Seeing the writing and curious, Rika asked. "What does it say?"

"It says 'Pull the devil's chain to go in deeper into the abyss and face the trail of the Raitotawasuta. Pull the angel's chain should you change your fate." Guilmon said, breaking his fusion from Takato as he read it.

"Raitotawasuta?" AquaVeemon asked. "What is that?"

"I'm not sure." Takato replied, before placing his hand on the chain attached to the Devimon and saying. "But there's only one way to find out."

With no objections from Guilmon, Rika or AquaVeemon, Takato pulled the chain, causing the room to move around a little, before it began to go down, revealing to the four that it was not a room, but an elevator.

Now all they could do was wait until they arrived at the bottom, to see what was so important to be hidden from the rest of the Digital World.

-Meanwhile, in an unknown location-

Within what looked like a break room, the Demon Lord, Lilithmon sat on a couch smiled as she withdrew a black sphere from her briefcase, admiring it for a second, before holding it close to her companion's chest, causing the red aura around it to seep into his chest

"The preparations are almost complete. Then we can leave." She said, placing the orb away and causing the Digimon by her side to simply say in reply. "Good."

"You know, I was surprised when you told me you broke the seal of the Plagamon. When you first said that, I had doubts, but not only have you restored my power, but Uroboromon is also complete." Lilithmon admitted, sounding impressed at the end.

"And our alliance remains secured." The Digimon beside Lilithmon said in reply.

"Oh? I have my eyes set on something much bigger." Lilithmon purred as she placed her left hand on his chest, feeling the Digimon's muscles and asked. "You'll be needing a partner, right? Someone suitable to join you in your new world? I believe I've proved I'm worthy, haven't I?"

"Perhaps you have." BlackGuilmon commented in reply, showing he had survived his supposed demise.

However, the pair were interrupted when the masked Digimon entered the room.

"The Digimon and their human partners have arrived." She warned, making Lilithmon smirk.

"It appears your other half has come to pay a visit. Do I sense concern?" She teased.

"The plan is in its final stages, I will not tolerate delays." BlackGuilmon replied in a stern tone, earning an understanding nod from Lilithmon, who picked up her briefcase and left with the masked Digimon, while BlackGuilmon surveyed his factory, just as vivid memories of a conversation he had with another Demon Lord, Barbamon, entered his mind.

"...a new superior breed of Digimon... creating a new Digital World... the Hazard Digimon... you! I was to become ruler of a new world!" BlackGuilmon heard Barbamon's voice in his head, only for it to be silenced when the sound of stabbing was heard and BlackGuilmon whispering to the now dying Demon Lord. "That right is now mine."

And after the memory of Barbamon's end, BlackGuilmon focused back on the present, smirked as he gazed upon all he had gained and then said. "I believe I should thank you, Barbamon."