Jiang Hao, the "Wolf King" and king of assassins in the underworld, returns to China gravely wounded after a failed mission. To fulfill his father's dying wish, he hides his identity and becomes a live-in son-in-law of the Feng family, enduring everyone's contempt and mockery. But the tree may wish for stillness while the wind refuses to stop: villain Wan Zhiming's repeated provocations, the plight of his former comrade's family, and an international fugitive's conspiracy drag him step by step into a new vortex. With the extraordinary martial prowess of a transcendent grandmaster and the iron-blooded ruthlessness of the king of assassins, Jiang Hao settles scores with flair in the city, stunning everyone time and again. As the Dragon Fang Special Forces come recruiting and his true identity is gradually revealed, he wins the hearts of both the Feng family heiress and the Jin Corporation's CEO.