Adam and Margo’s housewarming party goes well enough except there’s this one mysterious couple lingering after the other guests have left.

After a regrettable first sexual encounter, a straight-laced high school student and her slacker best friend have 24 hours to hunt down a Plan B pill in America’s heartland.

Jocelyn’s boyfriend is perfect–except for his dangerous identical twin brother, Derek, who just escaped from a mental institution. When Derek unspools a twisted plan of revenge with Jocelyn in his…