SHEUNG SING is not only kicked out of the team by HEI-WAH, but also under investigation by the Internal Investigation office (IIO). He tries to convince YU-SUM to use the power of IIO to stop HEI-WAH from jeopardizing public safety. YIK-TAI is satisfied with HEI-WAH’s performance in the acid attack case, so he lets her handle NIM-BOK’s son CHEUK CHI-MAN’s kidnapping case, and HEI-WAH is very happy seeing her superior trust her. HEI-WAH has confidence in solving the case because one of the persons involved turns out to be BING-GO, who is cooperative. YU-SUM successfully forces YIK-TAI to put pressure on HEI-WAH, letting SHEUNG SING replace her as the commander of the acid attack and kidnapping cases. After taking over the kidnapping case, SHEUNG SING discovers that HEI-WAH talked to the kidnapper. In the meantime, HEI-WAH deliberately goes missing. Thus, SHEUNG SING guesses that BING-GO is the kidnapper.
