The returning young master Lin Jin and the underground boxing champion Lu Xiao met strangers in a bloody battle at the dock. In order to avenge blood and bring peace to the world, two men who were supposed to be enemies made a life-and-death oath back to back. Wenlong and Wuhu, walking together with double blades, create a new order on the black and white and gray blades. This is a bloody inheritance that lasts for thirty years. When the shadow is finally cleared away, only the echo of brothers' high fives continues to ring in the wave of the times.
