Mr. Peepers and his father-in-law Pa Remington decide to spend a day fishing, but they're after no ordinary catch. For fifteen years, Pa has been trying to hook a large trout, unofficially known as "Old Colonel." He thinks the assistance of his scientifically-minded son-in-law may do the trick this time.

Harvey Weskit returns from a visit to his in-laws with a large gift of money, which he hopes will buy him membership in an exclusive country club. Mr. Peepers knows the club president, and arranges a golf date between him and Wes. Meanwhile, Mr. Peepers takes a gardening job at the club in order to earn extra money, but this threatens Wes' chances of being admitted as a member.