In the chaos of the emergency room, Dr. Hannah Kline confronts a chilling mystery when a pregnant hit-and-run victim, Nicole Adler, is rushed in. Hannah delivers the baby safely, but the woman's devastating injuries have rendered her a quadriplegic with amnesia. Nicole has no idea who fathered her child and no memory of her life for the past year in Los Angeles. When neighborhood security videos reveal that the hit-and-run was a deliberate murder attempt, Hannah enlists her husband, LAPD Detective Daniel Ross, to help her dig into her patient's background.

Hannah's pursuit of justice leads her on a dangerous journey. Powerful foes lurk in the shadows, ready to go to any lengths to eliminate Nicole and safeguard their well-kept secrets. Hannah's relentless determination to unravel the truth soon places her own life in jeopardy.