Ralph, an energetic young mouse, is tired of life at the Mountain View inn. Over the Fourth of July weekend a boy named Keith gave him a mouse-sized motorcycle, but since then nothing exciting has happened. Hoping to find adventure, Ralph hops on his motorcycle and zooms away to the summer camp down the road. There he envisions fun, freedom, and delicious crumbs from peanut-butter-and-jelly sandwiches. Instead he runs head-long into a strict camp watchdog, a mouse-hungry cat, and even more fur-raising escapades. Suddenly home doesn't seem like such a bad place to be!