In the remote west courtyard of Prince Jing's Mansion, the concubine Xiao Yu used tree branches to outline his ideal country on the dirt. When the five princes set off a bloody storm in the capital, where factions were united and opposed, he chose to lie dormant in the dark, using the Tingfeng Pavilion as his eyes and the Shadow Killing Group as his blades, and worked his way up the chessboard-like court hall. The wind and sand of the northern border sharpened his iron bones, and the flames of the Central Plains tempered his strategy. From the concubine of the vassal who kept a low profile, to the rising military wizards in the north, to the annihilation of the princes and taking charge of the world.