El-Train enters the Science Fair to prove that he's smarter than everyone, including Jamal thinks.

There is a heat wave going through New York, Dawn convinces Ms. Noble to allow a small waiting pool on the roof of Manny High. Instead Al and Chris secretly set up a large swimming pool for the whole school to enjoy and relax. Ms. Noble later finds out about the pool when one of the many interruptions preventing her from having a peaceful lunch break is leaking water coming from the ceiling. She tells Al to get rid of the pool. Before he does this, Al attempts to conquer his fear of the pool and learn how to swim, but in the process he almost drowns. Ms. Noble comes in the nick of time to rescue him and decides to teach Al how to swim before she gets rid of the pool.

Meanwhile, Jamal's father and El-Train's mother develop an attraction for each other while attending a parent-principal conference. They set up a date and have the time of their lives. Jamal freaks out and doesn't know what to think of this blossoming relationship, the possibility of someone else being his mother, a

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.