In this Story we are in a possible finale of S2 of Glitchtale:
Chara freed her best friend Asriel from the Hate and they are facing Betty's army.
Undyne, Mettaton, Jessica, Toriel and Asgore are death, alongside with all humans and monsters, killed by the Soul of Fear.
Gaster is at the school, and Papyrus was in the lab in the Underground with Sans, which is still in coma.
At a certain point Papyrus run at the school for informing Gaster: What's happening?
PS
In this story Chara is a girl and Frisk is a boy.
In Glitchtale Chara and Frisk are both boys, don't confuse yourself.