Under the leadership of captain Li Guangfeng, Wang Xin, a young anti-narcotics police who returned from a special training at South America, launched an anti-drug operation under the code of "Operation Flash" in order to disrupt the conspiracy of the international drug lord Jin Ye and the insidious and cunning drug dealer Xu Dahong. A confrontation between black and white, a struggle between good and evil, the front-line anti-narcotics police starts a seaside anti-narcotics battle with the spirit of bravery, tenacity and the dare to sacrifice!...