You don't remember how and when you fell into the Underground. All you seem to know is that it's inhabited by monsters with little to no signs of human life. You make it your goal to find your way back to the surface where you belong and return home. But, when you somehow meet another human like you, everything changes...
Contains spoilers for Undertale, mostly platonic fluff, scenes of murder, and minimal cursing.
Undertale and its characters respectfully belong to Toby Fox.
Note: Since Chara's gender isn't specified, I decided to use "they" as not to offend anybody.