Tim and Lee are married with a young child. The chance to stay at a fancy home in the Hollywood Hills is complicated by Tim's discovery of a bone and a rusty old gun in the yard. Tim is excited by the idea of a mystery, but Lee doesn't want him to dig any further, preferring that he focus on the family taxes, which he promised to do weeks ago. This disagreement sends them on separate and unexpected adventures over the course of a weekend, as Tim and his friends seek clues to the mystery while Lee searches for answers to the bigger questions of marriage and parenthood.

June and Jennifer Gibbons are twins from the only Black family in a small town in Wales in the 1970s and '80s. Feeling isolated from the community, the pair turn inward and reject communication with everyone but each other, retreating into their own fantasy world of inspiration and adolescent desires. After a spree of vandalism, the girls are sentenced to Broadmoor, an infamous psychiatric hospital, where they face the choice to separate and survive or die together.