Yu Fei, a special soldier of China's strongest tiger and wolf brigade, code-named Sirius, was sent to Yunzhou City, where the dark tide is turbulent and the gangsters are rampant, to accept the leadership of the goddess boss, and arrange to be an undercover agent next to the kind and pure beautiful manager, so that the kind-hearted The mysteries behind the beauty were uncovered layer by layer. When all the mysteries were revealed, a violent bloody storm swept across Yunzhou City. In this bloody storm, in order to protect his relatives and his beloved woman, Yu Fei relied on a pair of iron fists , relying on the wolf nature of Sirius, in the confrontation of blood and fire, stepped on the bones of the enemy, climbed to the pinnacle of life step by step, and became the strongest Sirius in the history of the Tiger Wolf Squad.