When Tess, a tin foil ball, rolls onto the hill and meets Marvin, Ricky and the rest of the rocks, she immediately worries that she's too different from everyone else. But when the rocks go looking for a lost pebbles and get lost in the woods, it's up to Tess to save the day, as she realizes that everyone has value, and even a tin ball can be a rock star! Explores the concepts of self-confidence, friendship and cooperation.