Jerry is investigated by the library for a book he checked out in 1971 and never returned. Elaine fears for her career when her boss hates her recommendations, and Kramer strikes up a relationship with the librarian. Meanwhile, George believes that a homeless man is his old gym teacher, whom he got fired.

Jerry tries helping the owner of a small restaurant attract customers by giving him a suggestion. George must take an IQ test for his latest girlfriend, so Elaine helps him in "a caper" where she takes the test for him. Kramer tries to keep his mother's ex-boyfriend's jacket, because it helps him meet women; however the ex-boyfriend comes looking for it.