Holmes High's football team is having trouble on the field, and the players suggest that Chet film their scrimmages to help them correct their mistakes. At first he resists the suggestion, but then borrows a camera and its equipment and begins experimenting with it. In the meantime, a former star football player named Alex returns after a career-ending leg injury. Chet is distressed that Alex plans to drop out of school because his football-playing days are over, and suggests that Alex become his assistant coach instead.
Chet hurts his back while showing his class how to use the parallel bars. A fellow gym teacher helps him get to the hospital, but Chet discovers that that's only the beginning of his problems, as he deals first with health insurance issues, and then has encounters with just about everyone at the hospital - except a doctor who knows how to treat an injured back.
Chet is in charge of a group of youngsters and is supposed to take them on an overnight camping trip. They set out for their destination, but mishaps occur and they end up staying over at Chet's apartment.
Students at the high school organize a lockout of the teachers' cafeteria, requesting that they have input over what foods go on the student menu. Chet helps the students and cafeteria manager reach a compromise. But when the same students have a grievance with Chet's gym class, Chet is not as willing to cooperate.
Chet has a super-duper TV antenna installed, so he can pick up the big game, which has been locally blacked out. With a houseful of eager teachers, Chet's TV set breaks down right before opening kickoff, so he must quickly hunt down another set.
While Chet visits the local barber shop for a haircut, he gets involved in a dispute with the barber and another patron over baseball. The three of them end up going to a high rise hotel, where the barberclaims he can catch a baseball dropped from a window of the hotel's top floor.
A boy, who practices Hasidic Judaism, joins the baseball team coached by Chet. The boy faces a dilemma, when the next weekly game's date switches from Sunday to Saturday, which falls on the Jewish Sabbath.