Mi Jia, a 22-year-old college student, accidentally traveled to the Song Dynasty and became Su Jinhe, the legitimate daughter of the important minister Su Ji. She fell in love with Sima Junshi, but something happened at home and her brother disappeared. Su Jinhe disguised herself as a man and embarked on the road to escape. On the way, she met Ye Huan from Liao, and then came to Liao... Ye Huan's identity and the identity of the mute servant became a mystery, and where was his brother... One mystery after another waiting for Su Jinhe to solve...