Frisk and Asgore proceeded to Sargon the Sorcerer's house on the outskirts of New New Home. They talked to each other on the way there.

"So, your majesty, how has your job as the king of monsters been since monsters reached the surface?"

"It's gone pretty well for the most part, except for those terrorists we have to deal with. Now, the space-time continuum is falling apart.

"We'll get to the bottom of it. How have things been other than that?"

"Well, I live on my own just as I had underground since Toriel left me. I miss her very much. I hope she'll forgive me someday, but I doubt that she ever will. Have you talked to her and told her just how sorry I am? She may not listen to me, but she might listen to you."

"I've talked to her, but she still won't listen. I'm sorry."

"That's okay, Frisk. You know, I also miss my children, Asriel and Chara. I can never get them back, but I want you to know that you're just like a daughter to me now."

"Thanks, Asgore." Frisk replied. "We're approaching Sargon's house. Maybe he can help us fix the space-time continuum."

Sargon welcomed them in and sat down with them at his table. Then Asgore asked, "So, can you tell us what's happening to the space-time continuum?"

"Yes." Sargon replied. "But before I do, I have something to ask your human ambassador." He turned to Frisk and asked, "Have you ever heard of the scientist W.D. Gaster?"

"No, I haven't." Frisk replied.

"I didn't think you had." said Sargon. "No other humans have. W.D. Gaster was the Royal Scientist of the Underground before Alphys. He may well have been the most brilliant scientist in monster history. I worked with him to find ways to break the barrier without the use of human souls. In addition to that, we created the CORE, which was the Underground's power plant. Then one day, he fell into the CORE and was broken down and scattered across existence. "

"That's horrible." Frisk said.

"Yes, it is." Sargon replied. "The Underground lost its greatest scientific mind that day. Though he is scattered across the universe, Gaster is still conscious and attempting to pull himself back together. Judging by the events at the speech today, Gaster has gone insane from the years he spent trying to pull himself back together. That monster you encountered earlier was one of his followers, a monster referred to as Goner Kid. When Gaster fell into the CORE, his followers made many attempts to bring him back. Many of them also managed to erase themselves from existence during these attempts. Gaster and his followers are invading our world and tearing apart the space-time continuum. I fear that if he is allowed to continue, he will cause the destruction of the universe itself. If he has indeed returned to our world, you will need to find him and deal with him."

"How can I do that?" Frisk asked.

"You can find him by using this device". He handed her a small device that vaguely resembled a cell phone. "It can measure the amount of FUN in a given environment. Do you know what FUN is?"

"Of course she knows what FUN is!" Chara giggled. Then she started singing. "F is for friends who do stuff together…"

Frisk struggled to hold in laughter and replied, "No, what's FUN?"

"During his search for ways to break the barrier, Gaster broke down matter into its most fundamental particles, smaller than quarks and leptons. He named them FUN particles for short. The more FUN there is in an environment, the closer Gaster is. When you find him, you will need to deal with him. I want you to bring him to me alive."

"I wouldn't do it any other way." Frisk said.

"Good." replied Sargon. "Your majesty, will you allow your human ambassador to embark on this dangerous mission?"

"I will." The King replied.

"If you don't have any other questions, this discussion is over. Thank you for listening to me. Good luck on capturing Gaster, Frisk."

With that, Frisk and Asgore left the house. Little did they know, a certain skeleton had used his knowledge of quantum physics to teleport into another room in the house and listen to the conversation. And this skeleton did not trust this Sargon character…

Continued in Chapter 5