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 his new purchase, they suffer another disappointment: the old airplane is in a deplorable state. Fearing Spencer's reaction, Stan and Cass decided 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, an expectant hitchhiker, search for her husband, who is looking for work in the oil fields.
