A mysterious alien named Avi arrives at Bear Ridge and befriends Bramble. Bramble learns that Avi’s people, the Rhyt, originated from Earth. However, having destroyed the environment, they had no alternative but to leave Earth and wander in the universe. Bramble then helps Avi to search for the ancient relics of the Rhyt, during which they are attacked by a mysterious high-tech military. This military now poses a great threat to Earth. What drove Avi to return to Earth? Can Avi rescue his last homeland from impending destruction? Uncover the thrilling answers to these burning questions.