Cameron Post (Chloe Grace Moretz) looks the part of a perfect high school girl. But after she's caught with another girl in the back seat of a car on prom night, Cameron is quickly shipped off to a conversion therapy center that treats teens struggling with same-sex attraction. At the facility, Cameron is subjected to outlandish discipline, dubious de-gaying methods, and earnest Christian rock songs but this unusual setting also provides her with an unlikely gay community. For the first time, Cameron connects with peers, and she's able to find her place among fellow outcasts.