After his release from prison, bank robber Zequi sets off to recover the stolen money that was buried by his dizzy accomplice. He's horrified to learn that a high school gymnasium is now standing over the site where the loot is stashed. Needing to infiltrate the building, Zequi lands a job as a substitute teacher for a group of wild and unruly students. As the ex-con tries to lay down the law, he starts to realize that life in jail may have been easier than trying to deal with rebellious teens.

When seemingly reformed ex-con Zequi is about to marry the love of his life, the lovably nerdy Lucy, wedding day jitters turn into a full-blown fiasco and Lucy calls it off. Meanwhile, the school finds itself in deep trouble and the gang heads to the water to compete in the tournament of their lives. Once they're all seaside, Lucy runs into her high school sweetheart Mario, coach of the opposing squad and Zequi finds himself a rival in more than one competition. Now he has to pull out all the stops to wrangle in his rowdy kids, win Lucy back, and in case that wasn't enough, save the school from shutting down by leading Frida High to victory.