Nagashima is a playboy who refuses to be tied down by marriage. Suffering from insomnia recently, he is eager to find a glamorous girl who can make him fall asleep. He leaves his tiresome girlfriend Mari, and soon finds himself trapped in dangerous triple liaisons involving two nightclub hostesses and a dewy-eyed girl. When all three of them start pestering him about marriage, Nagashima makes up his mind to flee…
