Howard's fear that wife Marion's former college boyfriend will sweep her off her feet when he comes to the Cunninghams for dinner turns to shock when the man instead shows interest in...daughter Joanie!
Fonzie begins restoring a wrecked 1955 Chevrolet convertible, unaware it comes with more than just broken seats, a broken engine and a rusted shell. It comes with a beautiful young woman, to whom there's more than meets the eye.
Joanie primps and Chachi nervously paces as their family and friends gather on their wedding day, while Fonzie and Howard try to convince a by-the-book adoption administrator that some rules are meant to be broken.
Fonzie, Roger and Chachi soon regret agreeing to help Howard Cunningham save his Grand Poobah position by becoming new Leopard Lodge recruits when they find out their pledge master is prankster Potsie "Sabu" Weber.