When a group of young sophisticated high society friends in New York take in a new member with more humble origins, they begin to learn what life is like outside their sheltered world.

Based on historical events, this suspenseful thriller examines the infamous 1969 death of Mary Jo Kopechne, who drowned after Senator Ted Kennedy drove off a bridge on Chappaquiddick Island, and the moral and legal complexities that play out over the following week.