Professional wrestler Genzou Shibata sports the body of a mountain, but beneath his hulking appearance may be a man with an extreme affection for animals. Facing off his opponents within the ring because the legendary “Animal Mask,” Genzou wins the hearts of crowds everywhere together with his iconic tiger persona.
During the bout for the title of World Champion against his greatest rival, the Macadamian Ogre, Genzou is suddenly summoned to a phantasy world by a princess. together with her kingdom being threatened by a monster infestation, she pleads the wrestler for assistance to which he answers by knocking her out with a German suplex! Escaping the castle and finding himself stranded during a mysterious land, Genzou decides to start his career as a beast hunter to capture and befriend creatures far and wide. Joined by the wolf-girl Shigure, the dragon-girl Hanako, and therefore the vampire Carmilla Vanstein, the professional wrestler pursues all types of dangerous requests for the sake of fulfilling his dream as a shop owner.