Frisk walked through the streets of New New Home to Sans and Papyrus's house. When she arrived, she saw Sans and Gaster playing basketball in the driveway.

"Get dunked on, Sans!" Gaster shouted as he jumped over Sans and dunked the ball into the hoop, much to Sans' embarrassment. Looking over, he saw that Frisk was standing in his driveway. "Hello, Frisk. Are you here to see my invention?"

"You know I am, Gaster." Frisk replied.

"Alright, then. Just come on into our house."

As Frisk entered the skeletons' house, she saw Papyrus. "Greetings, human! The Great Papyrus has some leftover spaghetti for you if you want any."

"Uhh, I'm too busy to eat spaghetti right now, Papyrus." Frisk had no interest in eating any more of Papyrus's awful spaghetti. She followed Gaster into the basement.

In the basement, Gaster led Frisk to a strange machine with a tarp over it. "This is my greatest invention. Behold…" He lifted the tarp, revealing a strange machine that Frisk could not identify. "My time machine."

Frisk couldn't believe what she was hearing. "You created a time machine?"

"Yes I did, my dear human." Gaster replied. "Unfortunately, it was broken by the shockwaves that were created when I fell into the CORE. But now that I'm back, I know how to fix it." He got out several tools and got to work on fixing the machine. A while later, he was finished.

"The time machine should be operational now." Gaster said to Frisk.

"What time do you want me to go to?"

"I am sending you to before the War of Humans and Monsters, back to when Zeregoth was defeated. The humans used powerful FUN-based magic to banish him into the void. This magic allowed them to bend space-time itself. If you're going to defeat him, you need to learn how to use that magic yourself."

"Can humans use magic?" Frisk asked.

"Yes, they can. Remember, they created the magical barrier that trapped monsters underground. But they use it in a different way. Unlike monsters, whose bodies naturally produce magic and know how to use it at birth, it doesn't come naturally to them. They need to learn it."

"Can't you teach me?" Frisk asked. "You rediscovered FUN, after all."

"I cannot. These are ancient, powerful techniques that have since been long forgotten. No one alive knows how to use them. Besides, humans naturally produce Determination. Both FUN and Determination are linked to the fabric of space-time, so humans are highly skilled at this kind of magic. You have the most determined soul in the world, so I think you have great potential with this type of magic."

"How do I use the machine?" Frisk asked.

"We'll need to hook it up to a vehicle of some sort. Sans and Papyrus's car will do just fine." Frisk and Gaster went out to the driveway and hooked the time travel device up to the car's engine. "You should be good to go now, Frisk. Do you have any more questions?"

"Actually, there is one more thing I would like to ask you. When I befriended Alazar, he told me there was an ancient prophecy about someone who could defeat Zeregoth, but he doesn't know the details of it because it's written in an ancient language that only Sargon understands. Do you know anything about the prophecy or who wrote it?"

"Unfortunately, I do not." Gaster replied. "I do not understand the language it's written in or know who wrote it. The author may have lived at any point during the period between Zeregoth's defeat and the monsters' banishment underground. Right now, the most important thing is for you to learn that magic. Good luck, Frisk."

"What time and location should I put in?" Frisk asked.

"The year is 1329 BC. The location is Kings' Valley. Long ago, Zeregoth and his army fought the human army led by King Esmond the Great. The humans were vastly outnumbered, but they managed to win the battle through their Determination and their use of this powerful magic. You will need to learn the techniques from Esmond or one of his wizards. Go now, Frisk. We don't know how long we have before the GDC attacks."

Frisk got behind the wheel of the car and entered the time and place that Gaster told her to. There was a flash of light, followed by a few seconds of darkness. At the end of the darkness, Frisk found herself in a cave in the middle of a forest, just like any other. If Frisk had just woken up in this cave, she would not be able to tell that she was several thousand years in the past.

"I can't believe the time machine actually worked." Chara said. "It's just like science fiction."

Frisk got out of the car and walked out of the cave and out of the forest. Suddenly, she found herself surrounded by several humans on horseback. The humans were wielding swords and spears, and they all pointed their weapons at Frisk.

"What are you doing here?" One of them asked impatiently. " That forest is monster territory. No human has returned from it alive. Are you a traitor? A spy for the monsters? You'd better tell us quickly."

"I'm not a traitor. I'm just trying to get through here." Frisk replied.

"Well, you're just going to have to come with us." The man replied. "Our King will decide what to do with you." They took Frisk several miles down a cobblestone path to an encampment full of many human soldiers. The encampment was surrounded by wooden walls and had many tents inside. In the main tent was a man sitting on what appeared to be a makeshift throne. He was tall, had dark hair, and had a beard. He must be King Esmond the Great. He was wearing wizards' robes, indicating that he was trained in magic.

The captain of the cavalrymen spoke to the man on the throne. "My king, we found this girl on the cobblestone road near the forest. She says that she was just passing through the area, but we suspect that she may be a traitor. What shall we do with her?"

"Let me see her." The King walked over to Frisk and looked her over. " You don't look like a traitor. Your presence gives off a feeling of hope." He looked into her golden eyes. "I can tell there's something special about you." He cast some sort of spell, and then Frisk's soul became visible. "You have a soul of Determination. This is very rare. You will make a powerful ally against Zeregoth, but I will need to teach you our magic if you're going to stand a chance. We are far too outnumbered to defeat the monsters in any other way. Will you aid us?"

"Yes, I will aid you." Frisk answered. The King led Frisk to the back of the tent.

"I will teach you the technique we will use to defeat Zeregoth." The King said. "First, I want you to close your eyes." Frisk closed her eyes. "Good. But to use this magic properly, you must first realize that all matter is made up of tiny particles." He tapped Frisk's head, and Frisk saw a countless number of these particles making up everything around her. "See these particles? They are the building blocks of time and space. If you tap into your Determination, you will be able to move them. Then you will be able to bend space and time to your will. Watch and learn."

King Esmond called one of his other wizards to him. The wizard cast a fireball at him, but he blocked it using a shield made of magical energy. "See, that's one of many applications for this kind of magic. The ability to create magical barriers. Now watch this." He teleported behind Frisk and then tapped her shoulder. "I can teleport. I can also do this." He used his powers to move a stick without touching it. "Telekinesis! There are many other uses for this magic, but our main goal is to use it to banish Zeregoth out of our world and into the void between universes. It will take the combined efforts of many of our wizards to accomplish this feat, for he is the mightiest monster this world has ever known. For now, you should practice using this magic for yourself."

Frisk envisioned the FUN particles, summoned her Determination, and shifted them. She picked up a dagger telekinetically, and threw it at a nearby archery target. "You did it, Frisk!" Chara cheered.

"I sure did, didn't I?" Frisk said proudly. Next, she teleported around the camp. "This is amazing!" Frisk thought to herself. She saw an empty fire pit, and used her magic to light a fire in it. "I can use magic now!"

"I knew you'd be good at it." King Esmond said to Frisk. With your Determination soul, you're capable of greater magical feats than anyone else in this army. Rest well tonight, for we march on Kings' Valley tomorrow.

Frisk slept in one of the tents that night. The next morning, she went with the army as it marched toward Kings' Valley. There were many thousands of humans, armed with swords, spears, bows, and a few of them were wizards armed with magic. Frisk traveled with the wizards and the King. After many hours, the army arrived at the valley. They saw monsters as far as the eye can see awaiting them on the other side of the valley. Zeregoth had not yet revealed himself, though. "Stay with me and the wizards." King Esmond said to Frisk. We're going to need you." Then, he walked up to the front of the army to give a speech.

"Men, this battle will decide the fate of humankind and the entire world. This beast named Zeregoth and his army of monsters think that the world belongs to them, and that they can kill whomever they wish. Shall we allow them to do this?"

"NO!" The humans shouted.

"Then stand with me and face this menace! For the sake of our children and our children's children, we must make our stand here. We will triumph or die today! TO VICTORY!"

The army charged into the valley below. The sound of their feet and their horses' hooves against the ground, as well as their shouting, was deafening. The monsters charged into the valley as well, and soon the whole place erupted into total chaos. The sound of clashing steel echoed throughout the valley, and before long there was blood and dust scattered everywhere.

Through all this chaos, Frisk followed King Esmond and his wizards. The wizards fought and killed several monsters with their magic, but Frisk did not raise a hand against the monsters herself. She could never do such a thing, even in war. Despite this, she had to duck, jump, and zigzag out of harm's way. She took a few hits, but used one of the spider donuts she bought earlier to heal herself.

Despite their numerical disadvantage, the humans were winning the battle. The monsters' front lines started to collapse, and the humans cheered. "Where's Zeregoth!?" Esmond shouted. "ZEREGOTH! COME AND FACE US, YOU COWARD!" The rest of the human army started shouting as well, demanding that the Father of Monsters reveal himself.

Suddenly, the sky grew dark. An enormous red dragon was flying overhead. The Father of all Monsters had arrived. "I am Zeregoth, Father of all Monsters! Humanity will burn, and monsters will rule this earth!" He breathed out an enormous breath of fire, incinerating a large number of human soldiers. Even as the main human army started to fall back, Esmond and his wizards charged forward to face the dragon. Frisk followed them.

The human king was furious. "This world does not belong to you, you fiend! And today, we shall prove it once and for all!" The dragon breathed fire at them, but they were all able to dodge the fire. More monsters started to move in to assist Zeregoth, but Frisk dodged their attacks.

"This is all you can do? You think your fire is a match for us?" King Esmond asked. "I would expect more from a being who's worshipped as a god!"

"I am the Father of all Monsters!" This is only a fraction of my power!" He flapped his wings, and they produced the strongest wind that Frisk had ever felt. Everyone had to struggle to keep their feet planted on the ground.

Next, the dragon flew up several hundred feet in the air and started raining fireballs on the humans. The wizards all created a magical barrier to protect themselves from these fireballs. The dragon summoned lightning next and managed to break the wizards' shield. The humans all scrambled to dodge the lightning. Even Frisk had trouble dodging them. She was grazed by the lightning, but was only mildly injured. One of the other wizards cast a spell to heal her wounds.

Zeregoth landed on the ground, creating a massive earthquake. Everyone was thrown back a several feet. They groaned as they got up.

Finally, King Esmond had had enough. "Now it's our turn to strike back. Wizards, converge on my location. They all moved over to the King. "Zeregoth, Father of all Monsters, for your crimes against the human race, we banish you from this world!" The wizards all started to cast a powerful spell through their combined efforts. Their hands started to glow blue. "Join our effort, newcomer!" He shouted to Frisk.

Frisk closed her eyes, and imagined the FUN particles ripping apart time and space, banishing Zeregoth into the void. Her hands turned blue, and the combined power of all the humans and the FUN particles they were manipulating created a hole in the space-time continuum. The fabric of the universe was torn, and Zeregoth, the Father of all Monsters, was cast into the void. He had been banished.

"We have done it!" Esmond proclaimed. May the deeds done on this day live on in song for all the days to follow!" The humans all cheered, and the remaining monsters surrendered.

"Well, we did it." Chara said to Frisk. Let's get back to the present. Frisk traveled back to the time machine, entered the coordinates of the skeletons' house and the year that she had come from. Upon returning to Gaster's house, Frisk went back into the basement and spoke to the skeleton scientist.

"I've done it, Gaster. I spoke to King Esmond himself. He taught me how to use the magic you described."

"Good. I knew you could do it, Frisk. I've explained our current situation to King Asgore, and he is constructing defenses around New New Home as we speak. Monsters are being recruited to defend the place, and even some humans have volunteered. I suggest you practice your magical abilities. You'll need them when the time comes."

"Thanks, Gaster. But there's one more thing I'd like to ask you. What exactly happened between Zeregoth's defeat and the big war that caused monsters to be sealed underground?"

"The human kingdom entered into a golden age of prosperity, while the monster kingdom was devastated. Many monsters sought revenge, and their opportunity came centuries later. No human king could match Esmond the Great's abilities as a ruler. After many generations of inept rulers, his family line was overthrown and his kingdom was split into seven. That's when the first GDC rose.

"What did they do?" Frisk asked.

"They took advantage of the situation and massacred a town full of humans. When the rampaging GDC members were barely stopped, the human kingdoms banded together and sealed the monsters underground. Each of the seven human wizards was from one of these kingdoms. One of them, a woman named Reyna, is said to have had golden eyes just like yours. I believe you may have descended from her. Reyna also had a soul of Determination."

"I'm descended from one of the seven humans who created the barrier? Who would have thought that one of the wizards' descendants would free the monsters?"

"Well, it's just a theory. You should rest now, Frisk. Save your energy."

"I will. Goodbye, Gaster."

"Goodbye and Godspeed, Frisk. I know you can save us."

Frisk left the skeletons' house and started heading back home.

Continued in Chapter 13