Free-thinking Johnny Case finds himself betrothed to a millionaire';;s daughter. His unorthodox plan to go on holiday for the early years of his life is met with skepticism by everyone except for his fiancée';;s eccentric sister, black-sheep Linda and long suffering brother, drunken Ned. With the help of his friends Nick and Susan Potter, he makes up his mind as to which is the better course, and the better mate.