Finally entering the super cool world where his brother, Kaze works, young X-VENTURE intern, Ray's joyful joining is rudely interrupted by a sinister someone bent on creating chaos, releasing a horde of Unknown Mysterious Animal (UMAs) from X-Sector care! With a dream come true suddenly turned into a nightmare made real, it's up to Ray, Kaze, and their fellow X-Venturer, Mina to save the day and put an end to this UNDEAD MAYHEM!