Fifteen-year-old Brigitte Fitzgerald (Emily Perkins, Insomnia, Juno) and her nearly-sixteen-year-old sister Ginger (Katharine Isabelle, Freddy vs. Jason, See No Evil 2) are both best friends and outcasts. Obsessed with dying and bound by a childhood pact to stay together forever, they loathe their mind-numbing existence in the suburbs of Bailey Downs. One night, the two girls are heading through the woods when Ginger is savagely attacked by a wild creatures.

Ginger's horrible wounds miraculously heal over, but something is not quite right about her. Ginger is irritable and in denial. But to Brigitte, it is obvious that a terrifying force has taken hold of her sister. She's convinced that the insatiable craving her sister is experiencing can mean only one thing - Ginger is becoming something unspeakably evil and monstrous.