After fighting off zombified versions of Shane, Leonard and Andrew in a nightmarish version of Hamilton High with a makeshift flamethrower, Sarah tracks Alex down to Hell's equivalent of Hamilton High's gym. There, she sees Mary Lou about to kill Alex so he can be her prom king for all eternity.
Following a fight against zombie versions of her classmates, Sarah finds Alex at the gym in Hell, where she witnesses Mary Lou planning to kill him and make him her prom king for eternity.