Gyeon Heeseong was abandoned by his parents & raised in a gambling den ..He does not hesitate to take on rough tasks for the sake of the older brother who accepted him into the group, but when he is turned into a puppy due to an injury from an attack, he is picked up by Yoon Chi-young, a wolf ..Since Heeseong's pheromones are undetectable he decides to deceive Yoon Chi-young by pretending to be a puppy and then escape... But Yoon Chi-young is a lunatic who never lets the puppy out of his arms.