Detective Liang Shaofeng is a police officer martyr's son, he is in an emergency, opened with hidden deep perplexing cross-border drug trafficking case. This action, Liang Shaofeng and his comrades and undercover cop, meticulous arrangements, wit brave, in the experience of life and death, blood and fire fight, the members behind and criminal gangs have captured escaped. At the last moment, an undercover police officer Ma Hailong held an evil bullet to Liang Shaofeng, in order to solve the case, Ma Hailong has not and his brother had, until in order to save brother and heroic sacrifice. The tomb of Ma Hailong, Liang Shaofeng brother offered up a bunch of flowers, it is him as a brother, but also as a police officer, lofty respect expression.