When Liao Qingkong was three years old, his cochlea was burned due to continuous high fever. Because he was born in a poor family, his parents were unable to treat him. His father was an alcoholic, and his weak mother killed his father because she could not bear his father's beatings. After his mother was sentenced to life imprisonment, Qingkong's relatives were unwilling to adopt him and sent him to an orphanage.
Xiao Yichen's mother died of leukemia after giving birth to Xiao Yichen and his twin brother. When he was four years old, his twin brother died of continuous high fever caused by leukemia. Yichen accidentally learned the cause of death of his two relatives, and that his entrepreneur father neglected to take care of him and suffered from aphasia. After trying many treatments, his father followed the doctor's advice and took Yichen to an orphanage to communicate with children of the same age. This year Yichen met Qingkong, and the five-year-old children developed a bond that transcended blood relations. Yichen's aphasia gradually improved, and the two grew up together.
At the age of seventeen, the two went to high school together. Here, they met the school gangster Hui Jinbo.