Qi Hanyi, the head of the Great Jing Night-Slaying Department, is cold and iron-blooded, killing whenever his blade is drawn. Mo Lingfeng, a genius of the Thousand-Machinery Pavilion, is free-spirited, arrogant, and divine with mechanisms. A shocking conspiracy of a god-slaying grand array forces these two men standing at the peak of martial arts and intelligence to team up. From the hilarious daily life of mutual sabotage and teasing, to the bloody battle side by side in the rainy night of Jiangnan, to the darkest moment when the white moonlight puppet turns into flying ash of sky-full blue light—with blades and gears, they carve out a path leading to dawn. True strong men do not need binding. Backs delivered, blade Qi borrowed, that is enough.