Gu Chenyu, the Nine Heavens Dragon Emperor, conceals his supreme identity and disguises himself as a food delivery worker to honor his marriage promise. He quietly supports the Long family and provides for his fiancée, Long Piaopiao. However, Long Piaopiao is obsessed with wealth and status. She attaches herself to Meng Chuan, the eldest young master of the Meng family, disregarding Gu Chenyu's sacrifices and humiliating him without restraint. Before their wedding anniversary, Gu Chenyu catches the two having an affair. Long Piaopiao even schemes to make him unknowingly raise another man's child before driving him away. Gu Chenyu pretends to endure the humiliation and sets a trap to expose their scandal on their anniversary. But Long Piaopiao publicly throws a divorce agreement at him and leaves with Meng Chuan. At a banquet celebrating the partnership between the Long and Meng families, Long Piaopiao humiliates Gu Chenyu in front of everyone. No longer willing to endure it, Gu Chenyu ends their relationship with a single letter of repudiation.