Claude and his father are on their mission to investigate the unexplored planet, Mirokinia. When they arrive at the planet, Claude mysteriously gets transported to another planet called Expel. Wandering around in the woods trying to find a way back home, he saves a girl named Rena from a monster with his phase gun. Rescued by him, she tells him that he is the Legendary Warrior of Light whom she's been looking for. In search of Sorcery Globe which is believed to be the source of evils, Claude and Rena set off on their journey that will determine the world's fate.