Monster in the Manor

A bully takes a soccer ball from some kids and throws it in an old manor. But it's not the first time he's taken the kids' things. The kids have thought about going in to get the soccer ball and everything else the bully threw in the manor, but they were too scared, because it's believed a monster lives in there. The kids decide the only way to get their stuff back is to go in and find them before the monster finds them. Can they find their things before the monster catches them?