Chet aids a fellow teacher from the high school who's trying to quit smoking. Herb Edelman guest stars as Mr. Maher, the teacher who's trying to kick the habit.

Chet's mother is going out of town, so Chet's father comes to stay with him while she is away. As they spend time together, they discover that things have changed and they don't have as much in common anymore.

Wally Cox guest stars in this episode as a shy man lacking in self confidence. With Chet's help, he builds up the nerve to ask a woman out on a date. She rejects him, and he wants to commit suicide. Chet helps to restore the man's confidence and self esteem.

Chet is asked to help straighten out Raymond, a youngster who has a penchant for stealing. In an effort to keep Raymond out of trouble, Chet finds a spot for him on his little league baseball team. But Raymond steals the money that Chet had saved up which was intended to buy uniforms for the team. In the end, Raymond realizes what he did was wrong and returns the money to Chet.

A young Jewish boy joins Chet's little league baseball team. Saturday is the day of the big game, and the boy is forced to decide between playing in the game, or sitting out due to his religious beliefs, Saturday being the Jewish sabbath.

John Marley guest stars in this episode as a wealthy, eccentric man who wants to relive his childhood. He seeks Chet's help to have his wish come true.

A male student from the high school seeks Chet's advice regarding love and jealousy. As it turns out, Chet could use a lesson or two himself and does not seem to practice what he preaches.

Elsa Lanchester guest stars as an eccentric woman who recruits Chet to help save a tree from being cut down at a construction site.

Chet is at odds with a student at the high school who wants to be a spy. Because the student is a fast runner, Chet wants him to join up with the school's track team. But the student wants no part of it, preferring to remain out of the spotlight.

Upon winning the award for Teacher of the Year, Chet has a difficult time convincing the other teachers to attend the banquet where he will receive the award.

Chet is in charge of a group of youngsters and is supposed to take them on an overnight camping trip. They set out to their destination, but mishaps occur, and they end up staying over at Chet's apartment.

Chet helps out a talented youngster who wants to become an artist. Chet disputes however, when the youngster chooses Chet as subject matter for his painting which will be on display at the art fair.

A female student at the high school is convinced she is destined to be an actress and is certain she will win an acting contest she has entered. Chet then tells her about the time he missed his own surprise birthday party to try and teach her a lesson about anticipation and being overconfident.

Chet starts dating a substitute teacher from the high school, and has difficulty finding time to spend alone with her.

A chance encounter on the street leads Chet to try out, and eventually to get hired, for a job playing an athletic coach in a breakfast cereal television commercial. Chet discovers, however, that shooting 30 seconds of film isn't as simple as it appears when the final product is seen on television.

Chet is in the running for the city handball championship. He defeats his semi-final opponent, using psychological tactics. In the final match however, Chet has the tables turned on him and loses the match while being psyched out by his opponent. By losing, Chet teaches a player on the high school football team a lesson in good sportsmanship.

Chet's nephew is in bed with a cold. Chet is asked and agrees to substitute for his nephew in the morning paper route.

While out jogging, Chet hears the telephone ringing inside a phone booth. He hesitates, but decides to answer. As a result, Chet ends up getting involved in a dispute between an auto mechanic and his wife. In an interesting twist, a case of mistaken identity in which Chet is involved brings this episode to a close. Vic Tayback guest stars as Calvin the mechanic.

Chet's brother Brian moves in with Chet after having an argument with his wife. Brian spoils Chet's plans for the evening, then hilarity ensues when they attempt to sleep in the same bed together.

Chet is having difficulty sleeping at night, due to the new neighbor across the street who's dog won't stop barking.

Chet helps a down on his luck old timer capture the spirit of Christmas. Rex Ingram guest stars.

Chet gets stuck inside an elevator at the high school along with one other faculty member and the school's cleaning lady. They entertain each other until help arrives. Henry Fonda and Elsa Lanchester guest star in this episode.

Drivers ed instructor Chet tries to teach a nervous student how to drive. Very funny episode.

Chet reluctantly agrees to go on a blind date, and ends up falling in love. Cicely Tyson guest stars as Chet's love interest.

Big Bronson, an old high school classmate of Chet's, is coming to town for a visit. Chet recalls having a past dispute with Bronson, and fears revenge. Chet meets ex prize fighter Hurricane Smith, and asks for some boxing lessons to prepare himself for Bronson's arrival. Lou Gossett guest stars as Hurricane Smith, Don Pedro Colley guest stars as Big Bronson.

A driving rainstorm is pounding the Los Angeles area. Chet's next door neighbor is due to have her baby and is unable to get to the hospital, streets are flooded. Chet helps out as the woman prepares to have her baby at home. Part one of a two part episode.