Jamal runs into one of his old friends and discovers that his friend is a nerd. So Jamal attempts to change his image and soon creates an egotistical jerk. Meanwhile, El-Train buys Ms. Noble a brand-new watch for her birthday that the gang all pooled with their money, but it turns out that the watch that El-Train purchased may have been stolen.
Dawn becomes involved with a student via e-mail while designing the school's website. Chris and Cassidy are determined to be alone together despite Jamal's clinging to them.
Chris meets Cassidy's father for the first time. Also, Dawn vows with the help of Al to rid Ms. Noble of her addictive smoking habit.
Jamal teams up with Malcolm, his dance nemesis to audition as backup dancers for a group called six-street. Dawn and Cassidy ask Al and El-Train to secretly take over their advice column for women temporarily. So they can attend a taping of Late Night with Conan O'Brien.
The gang get involved with a music group trying to make it big.
It is senior ditch day at Manny High. Jamal and Chris want to spend this special day bungee jumping with Cassidy, Al, and El-Train. Ms. Noble tells them they can't go because they have to have a radio-thon to raise money for children. Jamal and Chris decide to skip this and rig their radio booth with pre-taped reel-to-reels of their show. Meanwhile, Dawn fights against a student named Kitty Collins for the attention of Ms. Noble and the title of valedictorian.
Dawn falls for and starts dating Chris's old friend, Jack from his former prep school and she tells Cassidy that he might be the one. Chris finds out that Jack is still with his old girlfriend and Cassidy tries to tell Dawn, but she doesn't believe her. Dawn confronts Jack who tells her that it is over between him and his old girlfriend, but later finds out that she had been lied to. El-Train hits the road with Al and Jamal in his fixed up van to go attend a DMX concert. On the way, they pick up a hitchhiker who robs them and leaves the three tied up on the side of the road.
Jamal starts dating one of the waitresses at the Manhattan diner named Rosie. She is very independent and not afraid to speak her mind, which proves to be trouble when she begins to offend customers who get on her nerves at the diner. After numerous complaints, Mr. Grant gives his son the uncomfortable job of firing her.
Cassidy auditions for a play with a prominent Broadway director. She manages to get a small role but is thrilled just being in the play. Later, Chris sees the lead actress quit because the director is hitting on her. The director then gives Cassidy the lead role. Cassidy is thrilled until Chris tells her what happened to the other actress. Instead of believing him, she thinks he's just jealous that she's spending so much time with the director. But when the director comes on to Cassidy, she realizes Chris was right. The gang then sets up as sting operation on the radio to trap the director into admitting what he did. Meanwhile, El-Train falls out of bed and hits his head. After a few coincidences, El-Train believes he now has premonitions of the future and even goes so far as to predict that Death will be visiting Ms. Noble.
Jamal wants to get into USC, but his coach tells him that he isn't in shape enough to be considered for the team. He starts working out and is offered steroids at the health club. Meanwhile Dawn, Cassidy, Chris and Al have to deal with a cruel pottery teacher. Ms. Hotz scares the students and they eventually fight back. She reveals that she is only mean because most people take her class due to her sexy looks.
El-Train believes that by participating in any form of sports competition against his new girlfriend, Kianna will result in conflict which will lead to the disintegration of their relationship. He comes to the conclusion of this by witnessing Kianna become riled up during Chris and Jamal's radio show over wanting to beat El-Train in the basketball shoot out competition at the recreation center.
Meanwhile Jamal, Chris, and Cassidy work extremely hard to appease a newspaper food critic who has given a bad review to the Manhattan Diner.
Dawn is running for Senior Class President against a pompous and overconfident student named Thane Watkins. Jamal and Chris contribute to Dawn losing out on the position when they make a mockery of the whole election on their radio show which affects the voter turnout. In turn making Thane win by a landslide and unwittingly giving him the power to mess with many Manny High programs and to act on his distaste of their radio show by canceling it and dismantling the radio booth. Now Chris, Jamal, Al, and El-Train must work with Dawn to veto this decision. Meanwhile, Cassidy receives letters from a fan who has seen her in a commercial and he writes that he is flying to New York to visit her. She becomes a paranoid and nervous wreck when she believes that this fan and a crazed stalker that has escaped who are both from the same town is one in the same person.
El-Train becomes popular among the ladies during the reciting and singing of his poetry which causes him to pay less attention to his girlfriend, Kianna. Meanwhile Al, Chris, and Jamal attempt be the first students to prank Ms. Noble during her tenure as the Principal of Manny High.
A model agency is recruiting girls for thier magazine. Jamal's girlfriend, Rosie, signs up and gets featured in the magazine. Jamal is having probelms with guys googling over his girlfriend.
Chris, Jamal, and Al survive a car crash and now take life to the very extreme. They felt that thier lives ould end at any time.
The students of Manny High have a statue made of Ms. Noble in honor of her tenure as principal of Manny High placed near the front of the school. At the tribute, Ms. Noble tells the gang that there is an opening to produce a television show for Manny High. Chris and Jamal turn it down because they are already busy working on their radio show. Dawn, Cassidy, El-Train, and Al take on the job by creating and producing a spoof of the show, "Buffy the Vampire Slayer" called "Muffy the Werewolf Slapper." Jamal and Chris find out that their radio show will be competing with the TV show during lunch time and decide to work extremely hard to maintain their listening audience. They are shocked to find that the rest of the gang's tv show is a success among the students of Manny High. So they decide to sabotage the show by tampering with the audio during editing. Resulting in the whole student body turning on Dawn, Cassidy, El-Train, and Al because they believe that this audio mistake was due to lazy and hack writing. Meanwhile, Ms. Noble attempts to find out who has been defacing her tribute statue.
The gang all prepare for the Manny High Prom. Chris prepares to give a ring to Cassidy for this special occasion and to highlight their relationship. He also wants her to visit him at Duke University from Cal Art. Cassidy and Dawn misinterpret his message about the ring as a marriage proposal and the Duke brochures as Chris wanting Cassidy to go with him to Duke. Meanwhile, Al asks Dawn to the prom and she accepts. At the prom, the two fondly reflect on the memories of their time together when they were dating. Ms. Noble worries that by Billy being away, this will be another prom that she will have to attend alone. Also, Jamal and El-Train want to set up something special for Rosie and Kianna before they go to the special dance, but things don't seem to go right.
The whole gang is getting ready for graduation, but they are sent the wrong diplomas. There is another problem when El-Train might not be able to graduate. Things all work out in the end when they receive their correct diplomas and El-Train receives the credit he needs to graduate by performing in a play. Chris and Jamal have to find a way to end their radio show. A bizarre twist of fate hooks them up with the perfect goodbye. They attend graduation.
Ms. Noble and the gang decide to have a final farewell meal at the Manhattan diner before they go off into their new phases of life.
Al's new job has him advertising a toy gun without promoting violence. Meanwhile the others use the Manny High marching band to fulfill their Arts elective credit for graduation.