18-Year-old Yu Li is good at martial arts, but has forgotten how he learned it. She lives alone in a small wooden house in the forest, living alone and bored. Then when he went out to play, he picked up a handsome boy who was being hunted and took him as his apprentice. One day, the child practiced kung fu and broke the forbidden skills in his body, and he grew into a handsome boy, one year older than Yu Li. "Then from now on you call me master and I call you brother?!"