When Martin discovers that an old silent movie--in which, on a previous visit to Earth, he had accidentally starred--is about to be shown on television, he uses his time machine to return to 1925 in an attempt to force the picture to be re-shot with another actor in the leading role. Unfortunately when Martin and Tim go back in history, the film's leading lady chooses Tim to star . . . and Martin must force Tim to forgo not only the leading lady but also a brilliant career as a rising silent picture star. Tim finally sees the futility of his position and agrees, heartbroken, to return to the present--but not without recompense. As Martin promises, Tim meets a girl who makes him forget his long-lost love.