Mai, Oto and Vik think they've played everything there is to play in the park. They get bored, idly pushing toys around in the sandbox. But when they lose their toy, Yoko arrives to help. He scales the children down and off they go to find their little toy car. But Yoko gets distracted and loses sight of them. Uh-oh. The children and Yoko end up on a crazy adventure with huge squirrels, races in the desert, and being lost in a jungle of grass. Will they find each other before it's time to go home?