The steady, uneventful life of Roma, a lonely ninth-grader, is disrupted by Polina—a rebellious older student who is constantly getting into wild escapades. Together, they attempt to unravel the mystery of a mystical VHS tape—number seven—rented from a local video store. Drawn into a dangerous adventure and growing genuinely close, they have no idea what kind of choice the investigation’s conclusion will force them to make.