Zephyr is a young Wind Warrior — one of a noble squad of Air Elementals tasked with providing atmosphere to lifeless planets — selected by Captain Nimbus to lead the team. Their mission on Earth is complicated by an encounter with Omegaton, an antimatter being who claims that the Fire Flyers stole his six orbs of power. In exchange for recovering them, Omegaton gives the Wind Warriors a device to shield them from the sun's deadly radiation. Near the end of the game, the truth about Omegaton is revealed: in his home dimension, he is a villain — not a hero — and Zephyr must defeat him to protect Earth before returning to Harmonia with the rest of the squad.