Horizon Riders is a video game for the Nintendo Wii set on the planet Zethos, which is under the authoritarian rule of Thau-Phi, a rogue artificial intelligence. Players take on the role of skilled riders who must navigate various terrains and engage in combat to liberate the planet from Thau-Phi's oppressive regime while uncovering the mysteries of a technologically advanced world.
Planet Zethos has fallen under the military control of Thau-Phi, a rogue Artificial Intelligence.