Genzou Shibata, also known as "Animal Mask," is a wrestler with an intimidating physical appearance. Despite his towering size, Genzou harbors a deep love for animals. In the wrestling ring, he dons the persona of a ferocious tiger, captivating audiences with his prowess. However, his life takes an unexpected turn when he is summoned by a princess seeking his aid in saving her kingdom from dangerous monsters. During their encounter, Genzou subdues the princess with a German suplex before making a daring escape. Stranded in a new world, he decides to start a career as a beast hunter, driven by an unwavering desire to befriend every creature he encounters. With the help of his allies - Shigure, a wolf-girl, Hanako, a dragon-girl, and Carmilla Vanstein, a vampire - they embark on dangerous missions, all while Genzou strives to establish his own pet shop.