 Diaper Dampsey (Georgie Smith) has fought his way to the "Diaperweight" boxing championship, always with his sweetheart (Shirley Temple) at ringside to cheer him on. In fact, she s his good luck charm, and he can t fight without her there. With his championship on the line, his opponent, "Pop Skull" McGee (Lawrence Harris) has kidnapped Shirley to make sure he ll lose. Thanks to Dampsey s manager and a clever dog, Shirley is rescued, but will she make it to the arena in time to help Diaper Dampsey win the day?