A young soldier on a pass in New York City visits the famed Stage Door Canteen, where famous stars of theatre and film appear and host a recreational center for servicemen during the war. The soldier meets a pretty young hostess and they enjoy the many entertainers and a growing romance.

In a near future, a group of scientists trapped in a room learn that one of them is an AI and it has been deceiving them. They cannot escape until they figure out who it is.