Yan Heng was once the noble second prince of Northern Yan, rebellious and domineering. However, due to a leak of secrets, his family and country were overturned, and he was forced to go to Dajing as a hostage. During his eight-year career as a proton, he was forced to sharpen his edge and disguise himself as a cowardly, non-threatening proton. In fact, he is lurking in secret, working step by step to find out the truth about the country's collapse.
Bai Yan, a top assassin trained by the Dajing Assassin Camp, is ruthless and licks blood.
Xu is the thread of fate. The target he wants to assassinate is not only the proton in disguise, but also an old friend who has been away for five years.
In troubled times, the court is turbulent, with protons and assassins each having their own plans and playing games at every step.
They are each other's blades and each other's glimmer of light. In the endless maelstrom of intrigue, they find each other's salvation and return.
Intent: In troubled times, two people shackles of darkness meet in a game of intrigue and become each other's light.