"Asuka, you are my keeper." Asuka Tsukasa has an irrational fear of animals, especially dogs-which makes studying abroad in London, city of dog lovers, a bit of a challenge for him. There, in his vanished mother's hometown, he hopes to find a clue to her whereabouts and to meet the mysterious smiling girl from his dreams. But life only gets harder for this zoophobe when he's invited to join a secret organization that seeks to coexist with fantastical beasts and protect the world from the ones that go out of control. At least he gets to meet that girl-though she turns out to be a giant, snarling dog, who wants nothing more than to tear him to shreds!