In a high-stakes corruption case, ICAC Principal Investigator Kong Kin-chau edges closer to the truth within a listed company. Chief Investigator Szeto Kai-man and Assistant Investigator Ting Sum go undercover as a father-daughter duo to gather evidence against a construction firm, while Firearms Team member Chui Ho-nam and Assistant Investigator Chung Hau-ling help secure crucial intel. Meanwhile, Senior Investigator Ng Hok-bun exposes corruption within the prison system. Despite differing views and setbacks, the team remains steadfast in pursuing justice in the secondary school engineering scandal.
In Hong Kong, family members of a missing person may apply for the person concerned to be declared legally dead after seven years. While production house boss Yeung Man-sum decides to forget his wife Koo Ching-tin, who has been missing for seven years, and marry his lovely and supportive girlfriend Chu Sin-mei, his son Chi-hin’s birth mother Ching-tin astonishingly turns up! Due to some falling off a cliff accident, Ching-tin became forgetful and ended up homeless somewhere overseas. With lawyer Kam Cheung-sing’s help, Ching-tin returns to Hong Kong after seven years. She wants to retrieve her old memories. Ching-tin again works as a journalist. She curiously finds out someone seemed to have harmed her when she went missing. Meanwhile, Man-sum is torn between his new love and wedded wife. And he is worried about Ching-tin recovering from amnesia as the situation could get out of hand.
