On a walk in the woods, Sean and Brian find a scary footprint Sean Quinn does not like the sound of spending a weekend in a neighborhood named Grizzly Hill. Although his friend Alan assures him the development has been bear-free for a century, Sean is not convinced. The woods are thick and dark, and there's an old grizzly den not far from Alan's house. And when Brian discovers a strange footprint on a forest path, Sean starts to wish he had stayed at home with Mrs. Peabody, the babysitter. She's not any fun, but at least she's not a bear! Brian decides the print is too small to be a full-grown grizzly, but it could be a cub. Against Sean's wishes, they follow the tracks into the forest. If there are bears in the woods, Brian wants to know. And if the animal is something even stranger, he can't wait to find out!
