Agua que no has de beber

Research chemist Barnaby Fulton works on a fountain of youth pill for a chemical company. One of the labs chimps gets loose in the laboratory and mixes chemicals, but then pours the mix into the water cooler. When trying one of his own samples, washed down with water from the cooler, Fulton begins to act just like a twenty-year-old and believes his potion is working. Soon his wife and boss are also behaving like children.

Naive Stanley Windrush looks for a career in a family business. Much to his dismay, he finds work at a munitions factory where he has to start from the bottom, while both the management and the labor union use him as a tool in their fight for power.

Chang, a 16-year-old, Asian American, bets the high school basketball star that he can dunk by Homecoming. The bet leads 5' 8" Chang on a quest to learn to dunk—not only to impress his crush, Kristy, but to gain the respect of his high school peers too. But before he can rise up and truly throw one down, he'll have to reexamine everything he knows about himself, his friendships and his family.

Lifelong friends Dave and Mitch are envious of the other's life. Mitch thinks Dave has it all: a beautiful, loving family and a high-paying job at a prestigious law firm. But Dave thinks Mitch’s stress-free playboy life without obligation or consequence is the real dream come true. One fateful drunken night, they both admit that they wish they had the other’s life while peeing in a fountain when lightning strikes. The next morning, they wake up, hungover, in each other’s bodies! With time not on their side, Mitch and Dave comically struggle to avoid completely destroying each other’s lives before they can find a way to get their old ones back.