In the warlord era, Yi Jipei, the inspector of Jiangzuo, competed with Yizhou Li Chongnian for Jiangzuo in order to expand his power. Murong Chen in the north dominated the Central Plains and was eyeing the city covetously. Yi Jipei's eldest son Yi Lianyi was paralyzed by a fall from a horse when he was in his prime. The second son Yi Lianshen was brave and good at fighting, but the third son Yi Liankai indulged in sensual pleasures and was famous for his romantic style. When Yi Liankai was young, he met Qin Sang by chance and tried his best to marry Qin Sang. He didn't expect that Qin Sang also married into the Yi family with other thoughts. No matter how Yi Liankai was drunk and arrogant outside after marriage, Qin Sang looked at him with the indifference of an outsider. She made it clear that she married him so that her father could return to the officialdom, and was even willing to help Yi Liankai after achieving his wish. Qin Sang's ex-boyfriend Li Wangping, who was mysterious, deliberately approached Yi Liankai under the pseudonym Pan Jianchi and became his close adjutant. The situation suddenly changed. The second son Yi Lianshen, who was most likely to take over the Yi family, became the son of the sixth uncle Yi Shoucheng. The eldest son of the Yi family found out that it was Yi Shoucheng who caused him to fall off his horse. Yi Liankai found out that it was Yi Shoucheng who knew the mystery of his mother's death. The leader of the Tianmenghui followed by Pan Jianchi was also Yi Shoucheng. Under internal and external pressure and in the midst of brothers' quarrels, Yi Liankai tried his best to protect Qin Sang at the risk of his life. Qin Sang also gradually fell in love with Yi Liankai after several life-and-death situations.