Undertale odyssey takes place after the True pacifist route but one day Alphys saw the old scientist and the old scientist showed her the timelines and AUs. somewhere peaceful and happy and some a where truly miserable, she asked frisk Help the old scientist to make all the miserable AU, Underworld, Untoldtale, HELP_TAle, horrortale become peaceful.


Frisk is a full of determination, and their sex is still unknown, but they will do their job and make the evil nightmarish aus nice and heart warming


After a long study of the code, he found two files 1. multiverse.exe 2.Timeline.exe, and when he looked at them, he saw a terrible aus that frightened him, so he teamed up with frisk to help their suffering.

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