During the holiday season, a young man encounters a drunken cat belonging to an old man in an alley. The old man has trained his three cats to sing. (Source: Anime News Network)

Fleeing from his own race, Orgun – an alien being with superhuman abilities and unearthly weapons – travels to Earth to find an answer to his origin. There, he bonds with a young man named Tomoru to defend Earth against the Evoluders, who seek nothing but destruction of other civilizations. (Source: Anime News Network)