Yang Shinan, a straight-forward high school boy, plays games, masturbates, and is very interested in the opposite sex. On this day, he stood at the urinal as usual, but a lot of blood came out of his lower body. After diagnosis, it turned out that he had both male and female genitals. Under the doctor's advice, his parents decided to let him/her be reborn as a girl. He moved and changed schools. From today on, she is called Yang Shilan. However, although her gender has changed on the surface, it cannot change the boy's mind and his obsession with girls. Is the new life of "sex change" a blessing or a curse?