In high school, Matt and Ryan were best friends. More than friends, actually. But in the ensuing ten years, they've lost contact. So when Matt receives an invitation to Ryan's wedding he's surprised - especially that Ryan is marrying a woman!

Bobby Kellar has a crush on Lainie Diamond, girlfriend of school jerk Joel. Coleman is working on an experiment which will help him move into a place where Dreams are reality. When an accident occurs Coleman finds himself in Bobby's body and can only contact Bobby in his dreams.

Dr. Jack Hammond has best chances to become medical superintendent in the clinic. So he's completely absorbed in his work and has no understanding for his teenage son Chris' problems with school. By accident one of them drinks a brain-exchanging serum, and it switches their identities. This leads of course to extraordinary complications in school and at work, but also to insight in the problems and feelings of each other.

Kelly's grandpa invites the whole gang to his little hotel "The Hideaway" in Hawaii for summer vacation. They expect a marvelous time at the beach - without Belding. Upon arriving, they quickly learn that not only is Belding there, but they also have to help Kelly's grandpa from losing his hotel. Meanwhile Zack meets (again) the love of his life, Jessie and Slater bet with Lisa that they won't fight, and Screech gets kidnapped by the Pupuku clan.

Two quirky, cynical teenaged girls try to figure out what to do with their lives after high school graduation. After they play a prank on an eccentric, middle aged record collector, one of them befriends him, which causes a rift in the girls’ friendship.

When writer's block derails the literary dreams of Olly Pickering, he has to move in with his friend Murray after losing all his money. Things start to look up when Olly's college pal James asks him to be the best man at his wedding. Prior to the nuptials, Olly is drawn to a woman whom he thinks is the bride's sister -- only she turns out to be the bride, Sarah. Can Murray, who dislikes James, help get Sarah and Olly together?

Rome, 1989. On his last day of high school, Luca gets in trouble when he takes it all out on hated literature teacher Martinelli, only to discover he's going to be heading the examination board for his finals. During a summer of fruitless study, he falls in love with a girl he met once at a party, unaware that she's Martinelli's daughter. The latter, strangely enough, has just offered Luca to prepare with him...

Australian good girl Sandy and greaser Danny fell in love over the summer. But when they unexpectedly discover they're now in the same high school, will they be able to rekindle their romance despite their eccentric friends?

Shallow, rich and socially successful Cher is at the top of her Beverly Hills high school's pecking scale. Seeing herself as a matchmaker, Cher first coaxes two teachers into dating each other. Emboldened by her success, she decides to give hopelessly klutzy new student Tai a makeover. When Tai becomes more popular than she is, Cher realizes that her disapproving ex-stepbrother was right about how misguided she was -- and falls for him.

A ragtag group of students try to steal from the faculty room as they save both their grades and friendship.

Two former high school friends Patty and Cocoy find each other unexpectedly 30 years later, not only as organizers of their high school reunion, but also as new neighbors. Patty and her daughter Yanni's quiet lives then get an unexpected shake-up when love—in the form of Cocoy and his nephew Jason —comes knocking on their door.

Six high school friends in their 40s who haven't seen each other in nearly 20 years rekindle their younger selves after a court cancels their diploma, forcing them to repeat the final high school exam.