Rick is a rock. For as long as he can remember, he's lived on the Nature Finds shelf in Room 214 alongside an acorn, some moss, and a piece of bark. One day, the teacher shows the class what rocks do outdoors, and Rick is captivated. Exploding out of volcanos? Plunging off cliffs? Now Rick's determined to get outside--after all, he's a rock, and rocks are made for adventure.

But when Rick does make his way into the great outdoors, he finds it's not quite what he imagined--and that sometimes the greatest adventure of all is being a friend.