Mr. Beaverton can't believe the chaos in Evergreen Valley: a forest fire is burning in the mountains, Papa Bergmann, an elderly mole, is missing, and Vipera is on the loose! While the rest of the townsanimals tend to the fire, Mr. Beaverton and his friends set out on an adventure to find out what happened to Knotty Pine's mining mole, Papa Bergmann. Little do they know, a mazy mystery awaits...