Stan and Cass manage to convince Spencer to work with them in the acquisition of a "bargain": an old twin-engine propeller. Nevertheless, when the two friends see their new purchase, they suffer another disappointment: the old airplane is in a deplorable state. Lest Spencer's reaction, Stan and Cass decide to take the plane to the mechanic Wig Wiggins, even at the cost of interrupting his vacation, to tidy it up a bit. En route to Spencer Aviation, Cass and Stan help Susan, a pregnant hitchhiker, search for her husband, who works in the oil fields.

Cass, accompanied by Stan, substitute temporarily for a friend as a helicopter pilot for tourists at San Pedro port. One day, Marie, a young woman climbs aboard as passenger and once in flight she beseeches that Cass and Stan land at sea upon his grandfather's yacht. After their refusal, Marie proceeds to explain her situation. She is Marie Delagar, the granddaughter of a man sought by hired killers and asks Cass and Stan to get him out of the country.