Two fathers' lives intersect when one of them is involved in a terrible and sudden hit-and-run car accident that leaves the other's son dead. In response, the two men react in unexpected ways as a reckoning looms in the near future.

Los Angeles, 1928. When single mother Christine Collins leaves for work, her son vanishes without a trace. Five months later, the police reunite mother and son. But when Christine suspects that the boy returned to her isn't her child, her quest for truth exposes a world of corruption.