Cher and Mel are in their new house in Bakersfield. Cher gets a job as a waitress and Mel looks for work. Meanwhile, Amber has a house-warming party in the ex-Horowitz mansion.
Dee, Murray and Sean travel to see Cher hoping to convince her to return. Then Amber also arrives wanting the same thing. The group uncover a serious crime, which ends up with Mel receiving a large reward. It's back to their old home.
She is smitten by a new boy at Bronson Alcott High School, who also happens to be a gorgeous international model. Unfortunately, he happens to be a smoker. When he offers to quit for her, she is determined to help him.
It's audition time for the the senior class play, Grease, and Dee wants to play the lead 'Sandy'. However, Cher gets the part, which upsets Dee. But somebody else also wants the part.
Mel hires a pest exterminator to rid the Horowitz home of a squirrel. The exterminator turns out to be the former shop teacher Mr Hubley, who Cher and Dee got sacked. It turns out to be an eventful day.
It's Christmas time and Cher finds a new BMW in the garage. Thinking it's hers. she takes it for a drive and has a minor accident. Murray takes her to a body shop man who sees the virgin Mary in the dent. Then things get complicated.
Murray is having trouble getting a girl friend and he believes it's because Dee is scaring them off. It turns out, Dee is scaring boys off as well. The gang work at softening Dee's image.
When the school nerd, Marshall, saves Cher from a serious accident, she agrees to go to a sci-fi convention with him as a thank-you. Amber, Murray and Sean work at getting a fake ID.
It's the annual Bronson Alcott High valentines day dance. Amber becomes engaged to an elderly millionaire, and Cher and Dee feel that they must stop the marriage. Murray and Sean date a couple of unusual girls.
Cher is assigned to tutor the school's basketball star to bring his Art grades up to an acceptable level before the championship game. She is amazed as he discovers his artistic side, but she also finds a downside.
Dee's new boyfriend starts liking Cher instead and they kiss. This causes a moral dilemma for Cher. When she tells Dee they part company, until Amber steps in. Murray and Sean sign up to be on a TV reality show.
Cher is upset when she is not accepted into Stanhope University. The problem is her English teacher, Mr Pimmler, who excels in putting students down. When she confronts him, he has a heart attack and dies.
Cher and Dee are at Amber's house doing homework when they find her parents in the middle of fight, which ends in divorce proceedings. Their subsequent antics makes the gang determined to get them back together.
Amber finds herself in traffic court and is found guilty. As part of her punishment, Amber has 100 hours of community service. This involves mentoring a young girl, a job for which she enlists the help of Cher and Dee.
Dee wants to learn to sing to help cope with stress and gets from help from the school 'stoners'. Unfortunately, when she enters the school talent show, she fails the mandatory drug test.
Cher and Dee are having trouble deciding with whom to go the prom so they have an audition. Murray and Sean want to swap their girls. Amber goes with a Leonardo Dicaprio lookalike.
The class is about to graduate and Dee is the valedictorian. However, she is finding it hard to come up with a subject. Sean is seen on TV coming out of his house, which is outside the Bronson Alcott High school zone.
It's the end of high school and the group are going separate ways. Dionne is particularly upset that Murray is going away to Africa and so she decides to get back with him. They end up spending the night together.
