Childhood friends, Haoyue Jiang and Miao Lu, grew up like brother and sister always having each other's back. He helps her with schoolwork and she protects him from being bullied for his disability. As Miao Lu enters high school and makes new friends, she gradually realizes that her feelings for Haoyue Jiang go beyond that of siblings. Che Shi's arrival brings upon a strong sense of unease for Haoyue Jiang. Soon enough, the brother and sisterly love evolves into young love.