In the courtyard stands a hot, sultry summer and Greg with his parents, brothers Rodrik and Mani, as well as homemade dog goes into a large recreation complex, where there is the most important thing is the pool. Of course Greg completely different dreamed to spend their summer vacations.
He planned to stay home in a tranquil environment, watch tv, play video games, as well as dream of closer communication with classmate-beauty Holly heart which he has not yet conquered. But his father's plans for vacation, so Greg is compelled to obey, and spending time with family in a crowded pool people. However, Greg is not discouraged and is going to spend the summer in their own way, and the company will make him best friend Rowley, Shirag and Fregli, as well as Holly and her friend Patty.