Good riddance, every obnoxious Monster is finally gone from the Underground. Now Flowey can have some state of peace being all by himself, wallowing in his defeat - wait. Why is that human coming back? Don't they have anything better to do? Welp, nothing can stop Frisk's DETERMINATION. Even if it has to take one step at a time.

Five years after monsters returned to the surface in peace, Frisk, now thirteen, struggles to cope with painful emotions brewing in her head from the traumatic horrors she faced underground. With Flowey in tow and a familiar dark presence attempting to take hold of her mind, will Frisk lose control of herself and become consumed by the nightmare looming over her soul?