Edgar has become a compulsive horseplayer, much to his mother-in-law's chagrin. In order to get enough money to pay off persistent bookie Charley Hall, he rents his apartment to Bud Jamison. The Kennedy in-laws are going on a month's vacation, which fits into Ed's plans. However, when Jamison throws a wild party and his wife Dorothy Granger shows a more than casual interest in Edgar, the Average Man's finds his troubles are just beginning.