Chiaki quits a babysister due to being an Omega and works for a housekeeping service company. At the end of the year Chiaki, who was suddenly dispatched to a Alpha's home with children, was seven year-old, six year-old, and two year-old children, and a hybrid Alpha Ogami. The worst attitude of the huge body covered with gray-brown hair is the wolf itself. Although he started living while taking care of Ogami, and strange incident in Chiaki's body from the night of that day!?