According to legend, the once peaceful "Pluster World" fell into chaos and darkness because of the manifestation of the evil MINASUTA. At that time, selected Plusters were combined with humans, successfully sealing away the evil MINASUTA. It was then believed that the returned peace would last forever. Greenery and trees filled the land, flowers bloomed everywhere, and living creatures soared in the blue sky, ran on the land, and swam in the seas. However, this peace was lost again due to the reappearance of the MINASUTA... Now, the fusion of Plusters and Humans once again opens the door for a hot adventure!