A hotheaded widow searching for the hit-and-run driver who mowed down her husband befriends an eccentric optimist who isn't quite what she seems.

David Haller, AKA Legion, is a troubled young man who may be more than human. Diagnosed as schizophrenic, David has been in and out of psychiatric hospitals for years. But after a strange encounter with a fellow patient, he’s confronted with the possibility that the voices he hears and the visions he sees might be real.