Wang Xiaofan, who was born in a cold shantytown in M City, Country X, was born with a "proud" character that never bows his head. In order to survive, he and his four life-and-death brothers - the fiery and loyal Li Meng (Barbarian Bull), the clever and cunning Zhang Zhao (Mouse), the thoughtful Chen Mo (Xiucai), and the calm and experienced Sun Jianguo (Old Wolf) - struggled to survive in the cruel street arena.
He went on the run from city M, to fight at the bottom of city H in country S, and then went on an expedition to the bloody turmoil in city B in country D and city Y in country T. Their iron-blooded skills and strong love and righteousness allowed them to climb from street gangsters to the top of the dark kingdom, establishing an underground empire that spanned many countries. This thorny road is full of bones and betrayal.
Five women with intertwined destinies are imprinted in Wang Xiaofan's iron-blooded life: the innocent first love Lin Xiaoyu; the fiery partner Su Qian; the rich girl Qin Xue who struggles between light and darkness; the female police officer Shen Bing who vows to bring him to justice; and the orphan girl A Ling who silently guards. Love, hate, and hatred are the only warmth and deep pain under his cold power.
The peak of the empire is also a crisis. Brothers turned against each other (the scholar's betrayal), brothers and sisters died one after another (the sacrifice of the Barbarian Bull), the French Open was closing in on them step by step (Shen Bing's pursuit), and the internal strife exhausted the old friendship. In his twilight years, Wang Xiaofan stands on the crumbling ruins of power. The brothers who once stood side by side were either dead, imprisoned, or separated, and the huge empire was shaken by the torrent of sin and the times.
Did he collapse suddenly and fall into the abyss? Or when the final judgment comes, should we straighten the "proudness" that has lasted through life and been stained by wind and frost, and seek an ending that never bows for ourselves and our only remaining concerns?