In 1970s Baltimore, 14-year-old Mary Jane is glad when she lands a summer job as a nanny for the daughter of a local doctor. The doctor is a psychiatrist who has cleared his summer for one important job --- helping a famous rock star dry out. A week after Mary Jane starts, the rock star and his movie star wife move in. Over the course of the summer, Mary Jane introduces her new household to crisply ironed clothes and a family dinner schedule, and has a front-row seat to a liberal world of sex, drugs, and rock and roll. Caught between the lifestyle she’s always known and the future she’s only just realized is possible, Mary Jane will arrive at September with a new idea about what she wants out of life, and what kind of person she’s going to be.