Jiang Muyun, a boy from a poor family, married into a general's family because of a marriage contract, and became a useless son-in-law that everyone ridiculed. He swept the courtyard during the day and looked at the broken lamp alone at night. No one knew that he was an unknown soldier who crawled out of the blood sea of corpses in northern Xinjiang. The Yue family is in decline, enemies are everywhere, and even his wife treats him like a shoe. But he just lowered his eyes and listened to the wind and rain, waiting for the opportunity to move. Until the war broke out again at the border and the iron hooves broke through the city gate, the seemingly humble figure finally raised the rusty iron gun, pointing at the tip of the gun, and all the troops fell silent. This is the story of a hidden dragon that wakes up in the dark night and rewrites its destiny with blood and fire.