Kung and Kin's rivalry goes way back to the seventies when they fought over the same girl, who eventually became Kung's wife. Now they run competing phone stores right across from each other on Mongkok's busiest street, and stretch their minds trying to outdo each other with crazy promotions.

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.

Unable to make it as a commercial success because he staunchly refuses to sell out, a struggling Hong Kong musician rediscovers his love of music and regains an interest in his life's meaning through his relationship with a dying girl.

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.

Spunky girl-next-door Tung Tung, who's hot for rich guy, Chi Wing, but she can’t say two words to him thanks to one of those afflictions that occurs only in movies. It seems she has this annoying problem of hyperventilating whenever a guy she likes looks at her.

In this latest chapter of the PRISON ON FIRE saga, Fung, a gang leader sentenced to life imprisonment, gradually turns to religion. With the help of the prison's priest, Fung begins to preach to his fellow cellmates. But the toughest skeptic turns out to be his own son, who is now in the same prison.

Christin has been working at a hotel owned by Budcasso, her friend's fiancé. When she is discovered stealing money from the hotel, she turns to her friend Zidanes for help. When Zidanes refuses, Christin decides to fake a suicide attempt, hoping Budcasso will take pity on her. Unfortunately, her plan goes wrong, and she actually kills herself. Soon after, Christin returns as a fierce ghost, and begins to kill all in her path at the hotel as a means for revenge. In the mean time, Budcasso invites his spirit-fighting ex-wife Mrs. Bud Lung (Troublesome Night regular Lan Law) to the wedding.

Chang Yau-Wai is a family committed news reporter. Together with his wife, they have their hands full with their children, including their soon to be wed daughter. Things, however, soon take a turn for the worst.