Peter is delighted to be living not only with his parents, but also with Jack, who was very close to him. That until he has to move to the nightmare bridge to let his room come in. But Peter will not be beaten so easily, and by gathering his friends they will all try to get the grandfather out of the way, through a series of more foolish pranks. But Jack is not willing to lose, and how quickly he declares war to the boy, turning the house upside down. But the question remains: Will Peter be beaten in front of his grandfather or will he be able to recover his room by winning the war?