On the night of the Ninth Princess's wedding, she discovered that her consort died tragically, and the groom in front of her was actually Xie Xuan, the powerful chief minister. His words, "He is dead, and I will be your husband from now on" drew her into the whirlpool of royal secrets and blood feud.
Constantly reversing in the layers of puzzles of "suspended death", "usurping the throne", and "regicide", the two powerful protagonists go from scheming against each other to relying on each other in desperate situations, the ultimate push and pull. When all the conspiracy was revealed, they finally chose to stay away from the court, fulfill their "three-year promise" in the mist of Jiangnan, and spend the rest of their lives together in peace.