There’s a jewel thief on the train they’re taking cross-country and Lucy intends to catch him.
After Ricky plays a practical joke, Lucy is convinced that he is a genius and gets him on a quiz show.
When Mr. Mooney's boss threatens to fire Mooney because his bank branch has not succeeded in securing many new accounts, Lucy attempts to convince millionaire country singer Homer Higgins to deposit his money with the bank to help save Mr. Mooney's career.
Lucy is locked in a quarantine chamber with newly-returned astronauts, and the spacemen aren't prepared for the chaos caused by Lucy.
Lucy enters a mountain climbing contest in an effort to keep her job.
