蓝天开心跟忠正重温兄弟情，殊不知他原来是一个国际犯罪集团的头目。当忠正获悉蓝天在调查的商业诈骗案与他有关，为避免手下被抓，忠正买通蓝天身边的人，获得重要情报。由于证据显示，蓝天通风报信的嫌疑最大，蓝天因此被停职调查。蓝天暗中查到忠正涉及犯罪活动，不动声色，接近忠正，想要获得忠正的犯罪证据，蓝天被忠正发现，忠正身边的助手德海想杀蓝天，却被忠正阻止。忠正不想与蓝天反目，更萌生退出组织的念头。无奈，集团老大不放过忠正，以红夕性命要挟。芷婕在这时候也查出了忠正原来不止是泰国人劫杀案的幕后主使，而且还牵涉到另一宗命案。忠正知身份暴露，无可遁形，为了女儿，只好与蓝天展开一场兄弟间的生死对决。。。

　　更加紧张曲折的案情；更多与罪犯斗智斗力的精彩情节；更多犯罪现场的调查工作。且看执法人员如何群策群力地执行任务，如何在对抗罪犯和克服种种考验之外，在面对爱情、友情和亲情的挑战时，所流露出来的真性情。

　　他们都是诚信，忠心，勇敢和公正的，当中有多少困难和血泪，坚持和奋斗？

　　～完～

　　Synopsis

　　Two Thai robbers disguised as policemen entered a condominium apartment. Zhang Guixiang, a traffic policeman, happens to be patrolling in the area. He notices a suspicious car and bumps into the two robbers and their driver, Qingwa. Their ruse exposed, one of the robbers draws out a gun to shoot him. Fortunately, Guixiang’s quick reflexes save him from being shot. Tang Yaojia, who has just been transferred to Police Intelligence Division, rushes to the scene upon being notified of the case. He exchanges fire with the robbers in a fiery shootout. A stray bullet from one of the burglars’ guns hits a passing car and sends it careening. In the midst of chaos, the burglars seize the opportunity to flee. Qingwa, with Guixiang hot on his tail, slips and falls into a coma.

　　As the suspects possess firearms, the captain of Major Crimes Division, Huang Zhijie, is assigned to investigate the case. Zhijie discovers a male corpse in the apartment that was burglarized and deduces that it is a case of robbery cum murder. After a series of investigations, Zhijie succeeds in finding the robbers’ hideout. One robber is fatally shot by STAR when he showed resistance. While retreating into his hideout, the second robber engages Lantian in crossfire. He suffers the same fate as his accomplice as Lantian fires at him for self-defense. After much interrogation, Qingwa, who has regained his consciousness, admits to assisting the Thai robbers. However, he is unaware of the murder. As Zhijie fails to find anything suspicious about the robbery and a motive for murder, she does not delve deeper into the case. Nevertheless, is this case as simple as it appears to be? Or is there more to it than meets the eyes?