Several years after the end of World War II, a man named Peter Jenson (William Bendix) visits a psychoanalyst, Dr. Gillespie (Martin Balsam). Jenson tells him about a recurring dream in which he tries to warn people about the "sneak attack" on Pearl Harbor before it happens, but the warnings are disregarded. Jenson believes the events of the dream are real, and each night he travels back to 1941. Dr. Gillespie insists that time travel is impossible given the nature of temporal paradoxes. While on the couch, Jenson falls asleep once again but this time dreams that the Japanese planes shoot and kill him. In Dr. Gillespie's office, the couch Jenson was lying on is now empty. Dr. Gillespie goes to a bar where he finds Jenson's picture on the wall. The bartender tells him that Jenson had tended bar there, but he was killed during the Pearl Harbor attack.