18-Year-old Zhao Yichen appears to be a ruthless imperial uncle who is ruthless in killing people, but in fact he is the guardian of the royal family's secrets. Hidden under the golden crown of Xuanyi is a heart that is gradually melted by the 13-year-old assassin Sun Ling.
Sun Ling, as the genius killer of the Shadow Palace, his life experience was a mystery until he discovered that he was actually Zhonglie. The purple and white figure is constantly struggling between the assassination mission and the budding emotions.
The mysterious woman Bai Yue caused a series of murders. The white plum petals next to each corpse implicated the shocking secret of the rebellion in the north thirteen years ago.
Beidou Division, the Shadow Palace and the black-robed men behind Bai Yue form a subtle check and balance, and all clues point to the royal incident that changed everyone's destiny.
