Four grown-up friends go to a pool for a day of relaxing fun, but end up in an argument with each other before getting into the water. As they sit separated, each in their own little area, four adolescent boys do cannonballs right in front of them, making one of the men lose the goldfish he brought with him, and causing all four to completely lose their already heightened tempers. So, the men have no other option - They must declare war on the boys, and out pops a referee and announces the start of the Watergames: The ultimate battle for the pool.
—wiseguy-18