Childhood friends Qin Xiaoyang and Tang Shi take diverging paths after a life-changing incident—one becomes an elite undercover agent, the other a vigilante for hire. When Qin infiltrates a deadly terrorist group, the two are forced into a tense confrontation, where past bonds clash with present loyalties in a battle between justice and revenge.

During the Republic of China pirate leader Cai Yan was framed. Later, under the guise of amnesia, he was taken in by the abbot of the South Shaolin Temple, Huiyuan. In the face of pirates chasing and killing the Southern Shaolin disciples, they used flesh and blood to protect the villagers, and also influenced Cai Yan, who did not believe in the world, and helped him grow into a "The Angry Eye" who protects the soil and water.