Teenagers Rod and Ida belong to Species Od. They use their wheels to move around on railway tracks within OdCity. Tracks are always blocked at both ends. One day, Ida uncovers an unblocked track leading outside the city. Despite Rod's fears, Ida pushes them both into exploring it. Then a Temple priest suddenly seeks to recruit them. Why?

With Planet Meno's sun and climate failing, who is trying to keep Species Od's tormented history hidden?