While teenage best friends Lily (Odessa Young), Bex (Hari Nef), Sarah (Suki Waterhouse), and Em (Abra) lounge in Em’s bedroom watching Yasuharu Hasebe’s 1970 exploitation flick Stray Cat Rock and wearing red raincoats in imitation of the film’s protagonists, masked men surround the house. The camera drifts down halls and through empty rooms, looping in silence around the suburban house and up to the eaves to peer in at the distracted girls. Slowly, as first Em and then Sarah is taken hostage, the tension grows. More men slip in through jimmied windows and doors left ajar. One by one, they begin snatching the teens.