Guchao, who is preparing for a teacher qualification exam in Jiangsu Province, China, makes a big decision to confess to his father that he is gay. Meanwhile, An An, who lives in Shanghai, came out to her mother at the age of 19, but she turned 32 without being accepted. With the help of volunteers who support sexual minorities, she talks with his mother again and tries to get her accepted. Homosexuality was once regarded as a "crime", and old social wisdom persists in China. A thrilling relationship between parents and children develops in a fierce conflict and seeks to overcome the wall.