Sarah (Lena Headey) works a dead-end job in a cafe, and is stuck living with her alcoholic mother (Linda Bassett) and haunted little sister (Milly Gregory). Her escape comes from taking ecstasy and dancing at raves. When she falls for Tom (Ian Hart), a seasoned partier who's never without his bag of pills, she gets swept up in rave culture and the free trade of drugs. But the fantasy of clubland is only a temporary respite from reality, and Sarah must confront her problems at home.