Love begins in the warm September, grows in daily moments, and ends on cold snowy nights.
Chen Cen lacked fatherly and maternal love since he was a child; he witnessed his mother die at his feet and his father cheated on her; he lived with his grandfather; Li Twelve's parents loved each other and the family was warm and harmonious; his grandmother was extremely patriarchal and wanted to sell her to marry her grandson many times. Such two people meet on campus, develop a mutual affection for each other, and become each other's sunshine. Later, due to a misunderstanding that Chen Cen went to study abroad, Li Twelve entered society and became an ordinary white-collar worker. When Chen Cen returned, the two began a new round of sadomasochism.