His past has been erased. Now he wants a future. A minor car crash has a major impact on the Thompson family when their teenaged son Steve (Neil Patrick Harris) sustains a 'simple dose of concussion'. Steve's life goes into freefall as injuries deep in his brain wipe out his memory, erasing every element of his identity. His mother Randi (Teri Garr) refuses to give up on her son, even if he is now a stranger to his own family. But Randi's well-meaning efforts to restore Steve's old life drive him to breaking point, and Randi must face the harsh fact that there's only one way to restore Steve to the heart of his shattered family.