The vast universe that spreads endlessly. There are as many hopes and dreams of people as there are countless numbers of stars. As well as nightmares. During a planet investigation, Claude came in contact with a strange energy field and got transported to an unknown planet. There, the earth swayed and monsters terrified the denizens.

Claude met a young girl named Rena, and in addition to searching for a way to return to his world, he went on a journey to investigate the calamities that had been troubling this world.