Genzou Shibata, a professional wrestler known in the ring as Animal Mask, gets summoned mid-match into a fantasy kingdom by a princess who wants him to slaughter the magical beasts terrorizing her land. He responds with a German suplex to her request and walks away to open a pet shop instead, determined to find good homes for the creatures rather than kill them. Running the shop with a staff of demi-humans, Genzou keeps hemorrhaging money because he can't bear to sell off animals he's grown attached to.