After keeping a dog for five years, Aveline discovers her dog was actually a beastman and that there were plenty hiding away amongst the human world. The problem? Her dog is an arrogant guy that prefers her spoiled older sister that was raised by their rich parents, and thinks Aveline is too clingy and demanding, along with broke and stingy. After finding the opportunity to dump the dog into her sister, she moves away to stay far from her family and the damned dog, only for her life to go crazy when she ends up getting an injured wolfdog.