Pete's fondness for pranks gets him in trouble at school and for his punishment he is sent to spend the summer working for his uncle's kayaking business, where he uses one last prank to stop a group of motorboaters from polluting the river and getting too close to the whales.Pete's fondness for pranks gets him in trouble at school and for his punishment he is sent to spend the summer working for his uncle's kayaking business, where he uses one last prank to stop a group of motorboaters from polluting the river and getting too close to the whales.