Yu Wanqing, the eldest daughter of the Hou Mansion, and Su Mo, the son of the housekeeper, have been close since childhood. They are childhood sweethearts and childhood sweethearts.
As they grew up, their relationship became more subtle and ambiguous, and a mishandled letter brought endless disasters to the two of them.
During a banquet at the Hou Mansion, Yu Wanqing's cousin was molested by a thief. Out of jealousy, her sister Yu Wanrong slandered Su Mo as a perpetrator. Su Mo was imprisoned unjustly and was later sent to the border. There seemed to be an unknown conspiracy behind this.
Yu Wanqing firmly believed that Su Mo was innocent and ran around for him, but she was still unable to save him.
On the border road, Su Mo was rescued and by chance joined the battlefield to fight for the country against the enemy.
Yu Wanqing ignored her family's obstruction and waited patiently. However, she accidentally got involved in the conspiracy of the Hou Mansion and fell into a cliff with her life and death uncertain.
After going through a disaster, Su Mo finally found Yu Wanqing and was about to start a happy life.
But fate was ruthless, and war broke out again, and Su Mo was eventually seriously injured and died in the battle.
When Yu Wanqing heard the bad news, she died in despair.
So far, Su Mo and Yu Wanqing failed to get together after all. The lovers were ruthlessly separated by fate, leaving endless regrets and lamentations.