When the Cassidy-Shaws' driverless minivan fatally collides with an oncoming car, seventeen-year-old Charlie is in the driver's seat. His father, Noah, is beside him, and in the back with his younger siblings is his mother, Lorelei—a renowned AI researcher—who is lost in her work.

During a weeklong retreat on the Chesapeake Bay, the Cassidy-Shaws wrestle with the moral fallout of the crash as a routine police enquiry starts to unravel. As Lorelei's increasingly odd behaviour stirs her husband's suspicions that there may be a darker truth behind the incident, the arrival of tech billionaire Daniel Monet (who has a mysterious history with Lorelei) cements them. When Charlie falls for Monet's teenage daughter, tensions among the Cassidy-Shaws reach breaking point.