When Zack learns that Bayside High's Glee Club has a chance to go to Hawaii to compete in a national competition, he talks his friends into joining so they all can go and have fun in paradise.

A.C. Slater and Jessie are finally a couple, but messes it up by disagreeing about how they will celebrate their coupledom, football versus ballet. Zach makes all the wrong moves by getting jealous of Kelly going out with an ex-boyfriend. After a fight breaks out at school, Mr. Belding tries to set the example of how couples should communicate, and after failing miserably, sides with the boys. Neither the guys or the girls want to be the first to apologize, but are miserable without their counterparts. Can Slater and Zach make up for their shortcomings to their girls before it's too late?

Zack and Kelly's relationship is going from strength to strength, but is soon jeopardized when Zack falls for the new school nurse.

Mr. Belding's brother Rod, a substitute teacher, arrives at Bayside to teach the gang's History class. Rod proves instantly popular, and soon Mr. Belding is dismayed to find that the kids prefer his brother to him.

Following a mix up, Kelly has to bring her baby brother Billy to school, and the gang must look after him.

If Zack wants to run the track meet, he better prepare his ancestry report where he gets help from an Indian.

After Zack breaks the school's video camera while filming a movie, he talks his friends into sending a picture of Screech dressed as an alien to a tabloid. As a result, they have to trick a government agent passing himself off as tabloid reporter to believe Screech is really an alien.

In an attempt to make money, Zack sets up a 900 number hotline, with Lisa offering advice to the students of Bayside. However, things go awry when Zack decides to keep the line running by dishing out bad advice.

After a heated debate about the school calenders, a photographer decides to use Jessie, Lisa and Kelly in a photo shoot where Kelly is chosen as the winner of a contest that'll make her famous in France.

Jessie turns to caffeine pills to keep up with her studies and her new singing group, Hot Sundae.

Bayside's winner of the Miss Bayside beauty pageant will go on to compete in the state-wide pageant of Miss High School California. The pageant stirs up controversy about sexism, in which both A.C. Slater and Screech enter as contestants to win a bet over who could win. Who will be the next Miss Bayside?

The gang decides to hold a carnival to raise money for a ski trip. Zack has been failing so Belding calls a meeting for Zack and his dad. Zack hires an actor so that Belding won't be able to call on his dad again.

If Zack gets one more detention, he is suspended. Belding threatens to suspend Zack unless he agrees to go on a date with his niece Penny.

Zack stays over at Screech's place for the weekend where the two of them along with Slater throw a party which is interrupted by the girls before breaking off a valuable item from Mrs. Powers.

After becoming jealous of Slater's success in Driver's Ed class, Zack plots to get him into trouble, but his plan soon backfires.

The gang unearths Bayside's old school radio station and begins broadcasting again, before learning that The Max is to be closed if Max does not manage to pay $10,000 in back rent.

To avoid having to go to detention, Mr. Belding gives Zack the option of joining Bayside's branch of the California Cadet Corps, ROTC type program. He then gets tasks recruit his classmates to participate in a friendly athletic competition. However, when he picks the most athletic students to be on his team, while the placing the academic students on the opposing team, to ensure his victory. However, when drill instructor realizes what Zack's up to, he makes him switch teams.

The prom is coming up and Kelly is looking toward for a great night until her dad loses his job. Kelly is devastated so she decides not to go.