In a world where pet dogs and cats are humanized, who really owns whom? Due to a declining birth rate, pets are being transformed into humanoid members of society. But are they truly human? Or are humans truly animals? When misanthrope Ao discovers her family dog, pit bull Taika, standing over the mauled body of her father, she must decide whether to forgive or forget. Ao isn't ready to lose both her beloved father and her devoted pet, so when her mother has Taika humanized, Ao embraces the new dogman and even brings him to school with her. There, Taika meets a German shepherd, an elite police dogman, and begins to unlearn canine behaviors and replace them with human customs. Now, the two dogmen compete to see who will be the first to track down the source of the mysterious traces of blood in Ao's locker.