Xia Xiran is a little sensitive and paranoid due to family and congenital disadvantages, but unknowingly falls in love with Xu Kan, who is in his class. Xu Kan is just like his name, he talks endlessly all day long. Just when Xia Xiran wanted to express his feelings, he discovered that Xu Kan's father was his father who had been away from home for many years. Unable to accept it, he did what he regretted most in his life - he imprisoned Xu Kan. For a long, long time afterwards, he was unable to get out of the nightmare and needed psychological treatment. Seven years later, he still met Xu Kan. Only then did he realize that he was wrong about some things from the beginning and couldn't hide from them. On the surface, he is gentle and slightly introverted, but on the inside he is dark, sensitive, paranoid and aggressive. He is a talkative and heartless person, but in reality he is deeply affectionate. He is cool and domineering, dotes on his sister, is a crazy man, and is a tsundere, a hairy and poisonous tongue girl.