Tommy Layton (Robert Paige), a weathly bachelor, rents a city bus and rides it from Chicago to Los Angeles. Once there he intends to participate in a yacht race to Hawaii. The drivers of the bus, Algy (Bud Abbott) and Wellington (Lou Costello), are then chased by a detective (William Demarest) who was hired by the bus company. They escape capture by driving the bus off a fishing pier. Layton, who is on his yacht already, rescues them and hires them as his crew for the race. A competitor of his in the race, Joan Marshall (Virginia Bruce) has fired his original crew without his knowledege. He enacts revenge by kidnapping her and taking her along on the race. While on course to Hawaii, they encounter a hurricane and land on an uncharted island, which is also the home of Dr. Varnoff (Lionel Atwill), a mysterious scientist. The island natives mistake Wellington as a legendary hero and inform him that he must marry Princess Luana (Nan Wynn). Meanwhile, Varnoff’s plan is to cause the volcano to erupt in order to trick the tribe into giving them their sacred jewel.