International narcotics officer CHOI , has been demoted by his superior officer MA to local duties after partaking in bribery in the line of work. He’s assigned to a death scene investigation by YAN where the deceased, YUNG’s body had laid undiscovered for eight years, and only recently discovered by maintenance workers during the renovation of an old block of flat. CHOI looks into CHAO as the prime suspect, and linking it to adultery with YUNG’s widow PING as an accomplice. The case soon comes under scrutiny by a high-ranking court prosecutor SANTOS. Under his inquiries, the investigator becomes the investigated, and CHOI’s actions fall under suspicion as all manner of inconsistencies come to light from his statement. YUNG was a man of many vices, with few crimes left untouched by his hand – rape, drug smuggling, blackmail and working alongside notorious gangster FAI WAI.
Former warden Tang is imprisoned for accepting bribes, while Jun who failed to escape from prison returns to prison to continue serving his sentence. Jun sees that Tang is familiar with the prison and lures him into cooperating in the breakout plan. The two hit it off, and even tried to create trouble and blame it on Big Roller. Jun soon discovers that Tang has other tricks, forcing him to team up again with Big Roller, Mak and new warden Ma to crack Tang`s conspiracy.
Ho Chun, a young entrepreneur, is sent to jail. By implementing his philosophy in the business world that money can solve any problems, Ho Chun offers Big Roller, Kin-Tin, Scar and Ho-Ching a considerable amount of money for assisting him to breakout from jail.
Sequel to 77 Heartbreaks, 77 Heartwarmings, sees the return of Charlene Choi as Eva, and Chau Pak-ho as her ex-boyfriend Adam. Although it has been a year since their relationship ended, Adam is still very fond of Eva and hopes to win her back. He comes across an app that teaches him what to do to reignite the passion in Eva. While Adam tries the tips mentioned in the app and gradually bridges the gap between them, Eva meets Thai star Marvel (Mario Maurer), who also vies for Eva’s love.