Sorry for the short first chapter *sweatdrop* any way this second chapter will be a lot longer. I believe I have come up with a new Undertale AU so I need a name for it…Maybe 'Underflame' or 'Undersneek' if these names are taken then someone plz tell me. I am also joined with a guest that will accompany me in other author's notes. Say Hi to the viewers!

Temmie: Hoi! Temmie is new co-host!

Oblivion: Yep he…she…it will be joining us in other fics.

Temmie: Stop talk! We start fic now!

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That night…

"Okay, Chara we need a plan." I said pulling out a notebook.

"Umm…we could wait at Grillby's for Sans to show up and we follow him in."

"Well for all we know he can teleport into the diner from this very house and we would never know"

"okay, how about we stalk Sans and when he teleports we teleport to Grillby's and spy on him."

"That's better but we need to make sure he doesn't see us"

"Well…we could use magic" (deus ex machina, I know just go with it)

"Do you even know any invisibility magic?"

"No, but we could get mom to help us."

"Would she even agree to this?"

"No, but we could lie."

I looked at Chara in shock. I know they was evil and all that but if she were to lie to Toriel and Toriel find out, it would break old goat mom's heart.

"No I will take the lead and convince Toriel to help."

I know lies aren't exactly evil but it still rubs me the wrong way, but, telling half of the truth is a different matter. We decided to come up with different plans just in case and we gathered supplies and got ready for our little spy mission. All we need is Toriel's magic.

Early next morning…

We set our clock to 5:00 AM as to be awake before Sans but also be awake during the time Toriel is awake. However we had to take precautions and set Sans' alarm to at least an hour later than ours. When morning came around I awoke at five just as planned but Chara didn't. I went to go check on them and they were in their room sound asleep, I decided to check if the clock was set to the right time. I studied the clock and was shocked to see that the time was set back an hour, the only thing that could have happened was that Sans saw Chara mess with his clock. I reluctantly shook Chara awake and jumped back. Why did I jump back? Well if you were to try to wake up a person that tried to kill everyone and everything in their path (multiple times at that) you would run away as fast as you could. Right as I jumped away a knife came from Chara's pillow and would have slit my throat if I had not jumped back.

"Morning sunshine," I said in a cheery voice.

"What's wrong with you?!" Chara shouted, "It's four in the damn morning!"

"San tempered with your clock" I said, pointing at the clock

"Oh…sorry for trying to kill you…again."

"No worries. Just be glad that Sans didn't know that I had my clock set to five."

We made our way to the kitchen where Toriel was cooking some breakfast. Chara was about to approach her but I stopped them and shook my head. I walked to Toriel and tapped her shoulder.

"Yes my child?" Toriel asked s she turned around.

"Me and Chara-"

"Chara and I, Frisk please use proper grammar "

"Chara and I need your help with something."

"Whatever do you need me for?"

"Well we need you to cast invisibility magic on us"

"Why?" asked Toriel suspiciously.

"Well Sans has been acting weird for the last few days and he may be doing something bad. I don't want him mixed with the wrong crowd." I said. I could hear Chara scoff on the other side of the kitchen.

"Well aren't you being a grown up today" Said Toriel proudly, "Okay if you insist I will cast it but it will only work until this time tomorrow."

Toriel started to chant in a low, hushed voice. I could feel my skin tingling and my ears popped. When everything was done I didn't feel any different…until I looked in the mirror. My whole body was invisible including my clothes.

"Wow." I said in awe.

"Ditto" Said Chara whom I could still see."

"Now only you two can see each other" said Toriel Taking great pride in her work. She turned around and screamed bloody murder. The bacon and eggs were on fire. Sans, who had been asleep in his room, jumped out of bed and ran to the kitchen to see what all the commotion was.

"Tori!" Sans yelled, "What's wrong?!"

"My cooking! It's Ruined!"

"You yelled for that?" Sans said a little annoyed," you weren't such a screamer when you fought in that war"

"But the Bacon!"

As the two monsters bickered Frisk and Chara were having mini heart attacks from the scream and Sans bursting in. the two children calmed down when they noticed that Sans didn't even steal a glance at them. When Sans turned his back to Toriel she looked at the two of us and winked. Sans usually leaves at about 6 pm so we had time to kill. This is going to be fun.

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In this fic Frisk is about as innocent as Xion in the KH games. And I guess you could say that Chara is Axel.

Temmie: see you next chapter!