Halley had a perfectly fine junior prom with her two best friends. Yet when she wakes up the next morning, its the day of junior prom. Again. And again. And again. Guided by her genre-savvy knowledge of movies and books, Halley assumes theres some burgeoning disaster the universe wants her to fix  if only she knew what. The only way to find out is by delving into the lives and secrets of her classmates, both her friends and those shes been in school with for years and yet barely knows. Prom night after prom night, Halley begins to suspect that maybe everyones a bit of a disasterand maybe she doesnt know anyone as well as she thinks.