Frisk, Asriel, and Chara all returned to New New Home in the time machine. The time machine appeared in the skeletons' driveway, where a certain scientist was waiting for them. He seemed proud of what Frisk had done during her trip to the past.

"I knew you would find a way to save him, human." Gaster said proudly. "But I didn't expect you to be able to save her too." He said, referring to Chara.

"Well, what did you expect from the most determined human ever?" Chara asked Gaster.

Asriel wasn't happy that someone had seen him already. "Dr. Gaster, please don't tell anyone you saw me. I'm about to go into battle against the most powerful monster who ever lived, and I don't know if I'm going to survive. My parents will be devastated if they see me again only for me to be killed by Zeregoth."

"Don't worry, Prince Asriel." Gaster replied. "I won't tell anyone I saw you. I can't say the same for them, though."

Sargon the Sorcerer emerged from the skeletons' house, and Sans and Papyrus followed him. They couldn't believe what they saw. "Is that the lost prince Asriel Dreemurr?" Sargon asked. "And the fallen human Chara?"

"Indeed it is." Gaster replied. "But Asriel does not wish to be seen until after Zeregoth is defeated. He is worried about what everyone would think if they were to see him again only for him to be killed."

"I understand. But don't worry, Asriel. These two humans will keep you safe. Frisk is the strongest and most determined human in the world, and she values her friends above all else. And if there's anything I remember about Chara, it's her love for her friends and family."

"Oh, believe me, I know." Asriel replied. "Chara was a sister to me ever since she fell into the Ruins. And Frisk helped me become myself again. I wouldn't be here if it weren't for her."

"Where is Zeregoth, Sargon?" Frisk asked. "He could be preparing to attack New New Home or some human city as we speak. We need to stop him."

"I know. New New Home would not survive an attack by the Father of all Monsters himself. You saw the damage caused by the GDC's last attack. Speaking of the GDC, I managed to convince about half of the attackers to switch sides. The rest of them have retreated and regrouped. They are preparing to launch another attack, and their wrath will be most terrible."

"Just tell us where they are." Chara said impatiently.

"Our instruments have detected a very large magical energy signature moving toward New New Home. It can only be Zeregoth."

"How can we defeat him?" Frisk asked.

"You will need to teleport to him, challenge him, and defeat him. It will not be easy to defeat him, but Gaster has told me that you have learned Determination magic. If this is so, then you will be more than a match for him. You have the most determined soul in the world. And with Asriel and Chara at your side, victory is well within your grasp."

"Thanks, Sargon."

"I just want to thank you again for your mercy, human. You truly are the kindest, most merciful, most determined human in history. You had no reason to allow any of us monsters to be your friends, yet you call us your friends. No matter how hard I or any other monster tried to kill you, you always forgave us. Monsters would never have reached the surface, and Asriel and Chara would never have been brought back from the dead if it weren't for you. None of us deserve your mercy."

"Mercy is never deserved, Sargon." Frisk replied.

"That is very true. Now we need to protect New New Home and defeat Zeregoth. We don't know when his forces will arrive, but we will help Asgore prepare the defenses. Until then, make yourselves comfortable here and maybe try to get some practice in." With that, they teleported away.

Sans and Papyrus walked up to Frisk. "I can't believe you saved the long-lost Asriel and Chara. I thought they were dead. How did you do it?"

"It's a long story involving your dad's time machine, Sans. I can tell you once this madness is over, okay?"

"Alright, Frisk. Just be safe, okay? And be sure to keep your new friends safe too."

"I will, Sans."

"Before we go, I have something to give the human and her friends." Papyrus said. "Here's a whole plate full of my finest spaghetti!" He handed the plate over to Frisk, Asriel, and Chara, who all reluctantly took some. "Alright, let's go, brother!" Sans and Papyrus teleported away.

Frisk, Asriel, and Chara all entered the skeletons' house. They all sat down on the couch in the living room and waited for Sargon and Gaster to call them. While they sat there, Asriel began to speak.

"Frisk, I just want to tell you again how grateful I am that you went back to save me. You've given me back my life, my ability to love, and my very soul."

"You're my friend, Asriel." Frisk replied. "It's the least I can do for a friend. You deserve a chance at a happy life, just like all the other monsters."

"It's nice of you to say that, Frisk, but I really don't. I did some horrible things as a flower. I killed almost everyone in the Underground multiple times. I never succeeded in killing everyone, but that's only because of Sans. And that was before all the shenanigans I pulled against you when I was a flower. I don't deserve your kindness."

"I don't deserve your kindness either, Frisk." Chara added. Asriel wouldn't have even become a flower to begin with if I hadn't killed myself with those buttercups for my stupid plan. I caused so much heartache for mom and dad. Those six humans who were killed by Asgore all died because of me."

"It doesn't matter what you've done in the past." Frisk replied. "You're my friends, and I love you no matter what."

"We really appreciate it, Frisk." Asriel said. "Well, I can't wait to see mom and dad again after this battle. I'm sure they'll be happy to see me and Chara again."

"They sure will, They've missed you so much. But speaking of the upcoming battle, I feel kind of bad for Zeregoth despite all the destruction he's caused. He was just a leader and a father to all monsters, and he wanted to do what was right for his people. But I have no idea how I'm going to spare him. He's practically a god."

"Well, Frisk, I was practically a god when I took the all the souls in the Underground. I even called myself the God of Hyperdeath. But you were able to restore my sanity by bringing back my memories of myself and Chara, remember?"

"Of course I do. How could I ever forget that?"

"I remember when I felt the souls of all the monsters in the Underground and the love that they all had for each other. Gaster said that you learned Determination magic, and if you could use it to amplify that memory and transmit it into Zeregoth's mind, you may be able to restore his sanity. It would also help if Chara could also use that magic. She has a Determination soul too, although it's less powerful than yours."

"I'm not sure I can do it, guys." Chara said. "Like Asriel said, my soul isn't as powerful as yours. I don't have any experience with this type of magic."

"Come on, Chara. You remember what Esmond the Great said." Frisk replied. "You just have to imagine the FUN particles, tap into your Determination, and make the particles shift. Try it out on that sock over there. The one that Sans never picks up just to annoy Papyrus."

"Okay, I'll try." Chara closed her eyes and imagined the FUN particles and imagined them moving. She tapped into her Determination and moved the sock. "I'm doing it!" She exclaimed. She moved the sock over to the other side of the living room, and then put it down.

"That was a good start, Chara." Asriel said.

"Yes, but I wish I had more time to practice. Gaster could call us at any second now." Just then, Frisk heard her phone ring.

"Hello?" Frisk answered.

"Frisk, this is Gaster. Zeregoth's forces have arrived, and New New Home is under attack. GDC forces are pouring into the city. We need you to find Zeregoth and defeat him as soon as possible."

Frisk, Asriel, and Chara all went outside to find that the city was under attack. The wall had been breached, and the sounds of magic spells, guns, and the screams of monsters filled the atmosphere. In the distance, Frisk saw a massive dragon. "There he is, guys! Let's go!" With that, Frisk, Asriel, and Chara all teleported to Zeregoth. He was in his dragon form, and had used it to set the city on fire.

"It's over, Zeregoth. We're here to put an end to your evil ambitions for the sake of humans and monsters."

The dragon laughed. "You think you can defeat me? I am the Father of all Monsters, and I represent every monster who has suffered because of humanity's greed. Today is the day when humanity will finally pay for its crimes, and monsters will inherit the earth." He looked over to Asriel. "It seems that you have followed the path of your father. Like him, you have betrayed your people. But it's not too late. If you join me, you will be spared. You can rule this world with me and all the faithful monsters."

"I would never join you." Asriel replied angrily. These two humans have given me back my life. They risked everything for me, and I will do the same for them."

"Then you will die with them. This ends now!" The dragon roared and then he breathed fire all over the place. Frisk, Asriel, and Chara all dodged the massive jets of fire. The dragon continued to breathe fire at his opponents, who continued dodging. He also swiped at them with his claws. Finally, he unleashed a wave of light blue energy that turned Frisk and Chara's souls light blue. Asriel was unaffected because the only monster soul color is white.

In their light blue soul modes, Frisk and Chara moved slower than normal. This made it harder to dodge the dragon's attacks. They both moved together and raised a magical shield to protect themselves from the fire attacks. Though their movement was slower, their defensive capabilities were increased.

"Well played." The dragon said. But let's see if you can handle this!" He let out a wave of orange energy, and the humans' souls turned orange. They moved faster than normal. In fact, they couldn't stop moving no matter what. Zeregoth took advantage of this by moving objects in front of them so that they would crash into them. He knocked down trees and threw various other objects at them. They hit a few objects, but dodged most of them. Asriel used his healing magic on Frisk and Chara to heal their wounds.

"You can't beat us." Chara said. "You need to stop this madness. If monsters keep tearing each other apart like this, there will be none left."

"Silence, human!" The dragon shouted in a fit of rage. "I will avenge monsterkind! When my children remember you, they will only remember the countless crimes that humans have committed against monsters. And I will take my rightful place as ruler of this world! Take this!"

Zeregoth turned the humans' souls dark blue. This forced them to jump in order to avoid being hit by his attacks. He swung his claws at them, but they managed to jump out of the way. Asriel also managed to jump out of the way of the dragon's claws.

He turned the humans' souls green. Spears appeared in each of their hands, but they could not move at all. Asriel, who was still mobile, continued to dodge them. Zeregoth launched a barrage of fireballs at them, but they were able to block the barrage. The fireballs started to fly faster, and the humans were able to block most of them but took minor injuries. The fireballs flew faster, and Frisk and her friends took a few more hits.

"Chara, eat some of Papyrus's spaghetti!" Frisk yelled over to Chara. "It tastes terrible, but it'll heal you!" Everyone ate their spaghetti, and their wounds were healed instantly.

"So that's what Papyrus's spaghetti tastes like." Chara gagged. "It's worse than I could have ever imagined."

"In his defense, he learned how to cook from Undyne." Frisk replied.

Zeregoth looked agitated. He turned the humans's souls purple next. This meant that they could only move on straight lines. In the past, Frisk's soul had been turned purple when she fought against Muffet. The dragon charged at Frisk and her friends, but they were able to outrun him. He breathed fire at them, but they were able to dodge the fire by running along the lines.

The dragon was becoming angry. "Just die already!" He shouted. He unleashed a wave of yellow energy that turned the humans' souls yellow. Guns appeared in their hands. Frisk had been in yellow soul mode on Mettaton's show. Alphys had upgraded Frisk's phone to turn her soul yellow, and the yellow soul mode made the fight easier for her because she had been able to shoot Mettaton's projectiles out of the air. The dragon launched a series of fireballs at them, but they were able to shoot the fireballs out of the air. However, the fireballs split into smaller ones and continued to rain down.

Finally, Zeregoth turned Frisk and Chara's souls red again. "WHY DON'T YOU JUST DIE?!" He bellowed. He breathed more fire at Frisk and her friends, but they jumped out of the way.

"Just stop this now." Frisk said. "You can help us undo the damage that you've done to this world. "You can put an end to this long struggle that started when you declared war on humanity all those years ago."

"I had to declare war on humanity all those years ago! I had no choice. It was kill or be killed!"

"That's funny." Asriel said. "That's exactly what I used to think before this human came along. I think you need to learn from us. Frisk, Chara, now!"

Frisk and Chara tapped into their Determination and focused it on Asriel. When they were done with this, Asriel brought back the memory of the feeling he had when he absorbed the souls of all the monsters in the Underground. He remembered all the love that the monsters felt for each other, and then he unleashed a powerful wave of FUN energy that penetrated Zeregoth's mind.

"What is this feeling?" He asked. "I haven't felt this way in years." Then he realized the full extent of the suffering he had caused through his actions. "What have I done?" He thought to himself.

Zeregoth turned back into his normal goat monster form, which resembled that of Asgore or Toriel. He faced Frisk, Asriel, and Chara. "You are all right. Violence only breeds more violence." He turned to Frisk. "But you managed to free monsterkind from its prison underground without killing anyone. You love monsters so much, and now I've felt it for myself. I've caused so much destruction and suffering. There's only one way to make things right."

Zeregoth unleashed a massive wave of magical energy that repaired all the buildings in New New Home. Frisk, Asriel, and Chara's wounds were also fully healed.

"I just repaired all the damage that my actions have caused to the world. Your city of New New Home should be repaired now. The space-time continuum is also fully fixed. However, I have used up most of my power. Now, I am a mere mortal. Among many other things, I can no longer assume my dragon form."

"That's better than being trapped underground as a flower." Asriel thought to himself.

"You have restored my sanity and saved this world from my own hate. Though I spent many years trapped in the void, my greatest prison was my own resentment. Now to go out and help build a better future for humans and monsters."

The four of them walked back into the city. The GDC forces had stood down, and New New Home had claimed victory. Looking around, Frisk saw that her friends had survived the battle, and that a group of strange monsters were standing next to Gaster. Goner Kid was standing among them. They were Gaster's followers, and they had been saved when the space-time continuum was fixed.

Just then, Asgore and Toriel ran up to them, shocked at who they saw. "ASRIEL AND CHARA?!" They ran up to Asriel and Chara and embraced them with tears running down their faces.

"We thought you were dead. How are you here now?" Toriel asked in disbelief.

"We never really died." Asriel answered. "Frisk saved us."

"I suppose I'm interrupting something." Zeregoth said awkwardly. "I should go." He walked away.

"Asgore, I forgive you for everything you've done." Toriel said to her ex-husband. "We need to put our differences aside to raise our children. They once were lost, but now they are found thanks to our wonderful daughter!"

The sun was setting to the west. "So that's what a sunset looks like." Asriel said. "It's beautiful." He turned to Frisk. "But not as beautiful as you, Frisk."

"Aww, that's cute, Asriel." Chara interrupted. "But what are we going to do now?"

"I've still got the rest of that butterscotch-cinnamon pie that Toriel made for me a few days ago." Frisk replied. "Let's eat that to celebrate our new life together." Monster food did not spoil, and everyone was happy to eat the pie with Frisk.

As the sun went down and Frisk ate the butterscotch-cinnamon pie with her family, she reflected over everything that had happened over the past several days. She had transcended space and time, helped an evil god change his ways, and brought a broken family back together. She was determined to love and support her new family no matter what. For in the end, it had not been weapons or magic or even Determination that had saved the world. It had been love.

The End.

Author's note: I realize that asking for reviews is generally frowned upon, but I realize that this fic isn't very good and I may eventually upload a newer, better version of it to this website or to Wattpad. If you could tell me what to do differently, I would appreciate it.