"Rio, an Earth Gem, is eager to earn his first gemstone in order to do more for his animal neighbors. One afternoon, a fox bounds up to Rio, clearly in distress. Another fox is lost inside the nearby Crystal Caves! Without waiting for his fellow Gems, Rio heads into the caves. Once inside, finding a lost fox proves trickier than Rio thought it would be. Hes worried he might get lost himself!" -- Provided by publisher