Clarissa Hargrove thinks prom sucks.
She’s been protesting it for weeks, but the conformist sheep that go to Redvale High could care less. Not one single girl has ditched her prom gown in the name of feminism, except for Clarissa’s loyal, underappreciated BFF Cokie.
But Clarissa is still on a mission to save more souls-she’ll be at prom, with her bullhorn and picket signs, telling girls they have one last chance to ditch their hooker heels and claim their independence before high school is over.
That night, Clarissa drags Cokie to school to protest, but almost everyone at prom has turned into flesh-eating monsters. Trapped in a high-school zombie hellhole, the girls realize they’ve never taken a chance on love, and set out on dangerous quest to save their crushes.