The 12-year-old Su Mu met the 15-year-old Ling Xiao, the age when she was just starting to fall in love, but she had to bear a blood feud.
The palace has been ruthless since ancient times. In order to take revenge, Su Mu had to disguise himself as a woman to hide his edge.
The so-called engagement is a red thread, or it is just a joke of fate...