Song Mu, a hard-blooded mercenary who retreated from the hail of bullets, originally wanted to live a peaceful life in the city. By some strange combination of circumstances, he got married to Gu Qingying, the daughter of a wealthy family whom he had never met before, and obtained a wedding certificate. Originally thought it was just a non-interference contract marriage, Song Mu unexpectedly discovered that there was a shocking conspiracy hidden behind this marriage - someone was using the most trusted people around him to set up a trap, pushing him to a dead end step by step. The collapse of trust starts with the people closest to him. When brothers, comrades, and even the person next to him may become a fatal blade, Song Mu used his iron-blooded wrist to fight his way through this steel jungle. Not only does he have to survive in the whirlpool of conspiracy, but he also wants to let those betrayers know the price of provoking a man who has returned from hell.
