Claude C. Kenni, a crewmember on the spaceship Calnus and son of the commander of the ship, is transported to Expel, a backwards planet with swords and magic. He teams up with Rena Lanford, who thinks he is the legendary Warrior of Light, and other characters to investigate the Sorcery Globe, a meteorite that has been causing problems all over the world.

Star Ocean EX тривав 1 сезон. Нових епізодів не заплановано.