A Vegas casino owner teaches his son the gambling business.

Upon graduating from Princeton University, Andy Smith arrives in Las Vegas to visit his father, A. C., the owner-operator of Caesars Palace, one of the most successful of Vegas' ornate gambling hotels. Not having seen his son in some years, A. C. is disturbed by what he considers to be Andy's unmasculine appearance and unbusinesslike attitude. To prevent Andy from going to Europe, A. C. challenges him to a cut of the cards, beats him, and then forces him to work at the hotel for the summer. After A. C. has tested his son's interest in women by sending a voluptuous chorus girl named Phyllis Horrigan to his room, Andy enters into mild flirtations with his father's mistress-turned-wife, Diana Mayhew, as well as with his secretary, Molly Hirsch. Andy is sent to Zurich on business matters, and he demonstrates, almost overnight, that he has his father's talent for wheeling and dealing; and by the time he returns to Las Vegas he is adept enough to negotiate a deal whereby he gains control of Caesars Palace. Furthermore, he has become wise enough in the ways of love to decide in favor of Molly over Diana. Although A. C. is furious at being bested by his son, he is nevertheless delighted to discover that the boy has apparently inherited some of his own shrewd business acumen. Andy, however, was only interested in proving that he could do whatever he pleased, and once his father has been taught this lesson he arranges for A. C. to win back the hotel during a game of cards. With a new rapport established between father and son, Andy leaves Las Vegas with Molly to pursue graduate studies at Princeton.