After Song Yunjing refuses the Seventh Princess's demand, he is demoted and sent to Jiangnan, where he happens to meet Xie Miyuan, the current prime minister.
Jiangnan is rife with murder cases, and hoping to make amends through meritorious service, Song Yunjing volunteers to take charge and investigates with his friend. But why does the all-powerful prime minister keep following him around and protecting him...?
