A middle-aged man with no job and no girlfriend, living an ordinary, lonely life. Kotone discovers his shameful sexual desires. She acts like an innocent girl in front of her mother, but when alone with her uncle, she reveals her true side as a dominant mistress. Feeling unwanted by anyone, he is startled when Kotone tells him, "Uncle, nobody needs you, right? How about I be the one who needs you? Of course, you'll be my dog..." Her words shake him momentarily, and an unusual relationship begins.