John "Johnny" Forbes is a middle-class husband and father who is tired of his boring routine, working for the Olympic Mutual Insurance Company in downtown Los Angeles. On a day when he is especially downhearted about his life, private investigator and former policeman J.B. "Mac" MacDonald reports to him regarding an Embezzlement who had been Surety bond by Olympic Mutual. The man, Bill Smiley, is serving time for the crime, and is eligible for parole in two months. Smiley had given several expensive gifts - including a speedboat named ''Tempest -'' to his girlfriend, Santa Monica model Mona Stevens.