Set in a post-apocalyptic setting, the game follows the story of the robot Horatio Nullbuilt (voiced by Logan Cunningham) and his droid companion Crispin Horatiobuilt (voiced by Abe Goldfarb). They inhabit the UNNIIC, a derelict airship stranded in a vast desert. When an unknown, outsider robot assaults the UNNIIC and robs their only power source, Horatio and Crispin are forced to depart on a quest for energy that brings them to legendary city of Metropol.