Two years after a mass shooting, Ben and Abigail meet in a group for survivors of the victims. Unbeknownst to Ben, Abigail's son was the shooter who killed his wife, among many others. Intensely drawn to each other, they begin an affair—Ben unaware of Abigail’s secret, and Abigail too afraid to confess. When the truth emerges, their lives, and all those around them, face another devastating reckoning.