Screen legend James Stewart teams up with Joan Fontaine in the romantic comedy You Gotta Stay Happy. Dee Dee Dilwood (Fontaine), a wealthy heiress, has just made the mistake of her life: marrying the wrong man. On the night of her wedding, she decides to run away and enlists the help of a failing airline entrepreneur Marvin Payne (Stewart), who reluctantly agrees to let her hide out in his room for the evening. Sparks fly between the two and things begin to get really complicated when Marvin, along with his co-pilot (Eddie Albert), allows her to hitch a ride across the country in his cargo plane. The craziness continues when they have to survive a wild flight with a group of wacky passengers, including a cigar smoking chimp!