Jacksepticeye & the invasion of AU [ON HATIUS UNTIL FURTER NOTICE]

Jack doesn't know how he even got here.

The only thing he could call back was that he was sleeping in his room after a strange event that happen to him. Now he was in the middle of a forest with his buddy, Sam.

The last thing Frisk and Chara remembers is that they had just erased the underground world, and were about to reset, only to wake up in some kind of metal ship.

When they happen to cross paths with each other and another group, the three soon realized, what might be reason for them to be brought here.

joining toghter in a large group, traveling around to stop an bad immortal goddess from rising, which could end the world, they notice something strange.
Something not right.

Now join your famous Irsh youtuber and two characters from underground getting thrown into a different world, making new friends and allies...

And to stop a new rising evil.

All while trying to survived and find a way back home.
__________________________________________________________________________________

The seven already have a big job to do.

Fight an evil immortal earth goddess.

Defeat the giants that opposed the gods.

Fix the bond between the Greek and Roman camps.

Easy right? A lot to do.

What was not plan was for was three newcomers and a whole new changes of events, inculding meeting... themselves?

(This is an crossover story of Jacksepticeye, HOO, and Undertale.)
(Only Chara and Frisk will be appearing from Undertale. The other characters will be briefly mention but they're not that important to this story)
(The events are going to happen in the third book of the HOO series, but there might be some major different and changes in this version than the actual one.)
(Also yes, this is another book that is apart of my series)
(The HOO characters and story are own by Rick. Undertale characters and story are own by Toby Fox. I don't own anything except for the plot)
(The only thing that I do own are the OC from Au's)