On the eve of the fall of Gucheng, Xuan Zhiqiu discovered that he had become a double agent - in the Japanese intelligence department he was a traitor to the military command who was instigated to rebel, but on the military command list he was an executed traitor codenamed "Zhulong". The three bombs were counting down at the same time: the Japanese siege troops were preparing for a general attack based on the false information he had delivered. The military anti-corruption team had sneaked three meters behind him, and the sealed message in his arms read "Start the seeds, massacre the city and bloodbath." No one knew he could hear breathing frequencies in radio signals and decipher codebook pages from the sound of footsteps. When the lonely city turns into a dead game chessboard, this ghost, being hunted by both sides, begins to hunt in reverse the direction of all those who set up the game.