Stephane Miroux is an eccentric young man whose dreams constantly invade his waking life. While slumbering, he is the charismatic host of "Stephane TV," expounding on "The Science of Sleep" in front of cardboard cameras. In "real life," he has a boring job at a Parisian calendar publisher and pines for Stephanie, the girl in the apartment across the hall. While Stephanie is initially charmed by Stephane, she is confused by his childishness and shaky connection to reality. Stephanes co-worker, Guy, a vulgar but practical man, offers advice on the opposite sex, but Stephane is too far in the clouds to listen. Unable to find the secret to Stephanies heart while awake, Stephane searches for the answer in his dreams.