The underworld in the old city was divided among three rival powers. When the leader of the casino gang Donghesheng suddenly died, chaos erupted within its ranks.
Gu Tingchen, the young master of Donghesheng and a peerless swordsman, joins forces with Ji Heng, the young master of the Gold Society, who despises his family’s arms business and refuses to acknowledge his biological father. Wielding their blades, the two men sweep away internal dissent, taking back what rightfully belongs to Donghesheng from the Silver Snake Hall, which upholds the old guard’s rules, and the profit-driven Gold Society. Underworld battles are often fought hand to hand with cold weapons, and long blades decide the fate of the criminal world.