In the last years of Yonghe, the new emperor Mo Changrui came to the throne, and the king of Jing'an, Xiao Jingheng, was highly victorious and was poisoned. In order to save her husband, Princess Qin Yuezhao unexpectedly discovered that the current emperor was not of the late emperor's blood. The late emperor's blood letter on the jade pendant revealed the secret of the twin exchanges, and the secret edict to pass on the throne had long been tampered with.
The Queen Mother held the secret decree and remained silent, while Dowager Zhou faked her death to make the move; the army from the north pressed on the border, and a general with the same appearance as Xiao Jingheng suddenly appeared in the army. A mysterious man sings royal nursery rhymes in an ice cellar, and a baby's bones engraved with Xiao Jingheng's birth date are salvaged from a dry well in a cold palace... Under the mystery of his life experience, dormant forces have spun a web of regicide.
The tiger talisman appeared and the border troops moved. Assassinations broke out suddenly during the Royal Sacrifice Ceremony, seven silver goblets resonated, and the blood letters of the Xuanwu Gate appeared in the Northern Secret Order. Xiao Jingheng held the chess piece and sneered: "This dragon chair is made of blood."
——The end of the chess game is decided, and the one who survives is destiny.