Twenty years ago, Director Shi was ordered to encircle and suppress the drug lord Sha Kun Organization, which resulted in the death of Professor Yu, the father of Xia Zai. Twenty years later, a murder case occurred in Southeast Asian country N, and the MG32 drug reappeared. The Party Committee of the Ministry attached great importance to it and set up a special case team to investigate. At this time, Xia Zai, with family hatred and national hatred, went undercover. While lurking, he gradually uncovered the mystery of the drug trafficking group, and accidentally uncovered the truth about his father's sacrifice and the mystery of the old case related to his adoptive mother Shi Hong (Director). The forces of all parties are intricate, and the truth and lies are intertwined into an airtight network; the gunfire and the rain of bullets are full of dangers and suspense. A thrilling, exciting, witty and courageous drug hunting operation is about to begin...