Five police officers in Hong Kong are kidnapped. The police commissioner is on a business trip overseas. Two vice commissioners, Sean Rau and M.B. Lee, then take over the case. The two vice commissioners are rivals who both vie for the police commissioner seat. At first, M.B. Lee takes the lead in the case, but comes to a dead end. Sean Lau then takes the lead, but he falls into a trap. Both men are then investigated by the ICAC (Independent Commission Against Corruption).

Living in the guilt of sacrificing his informant in a previous operation, Criminal Intelligence Inspector Don Lee is wary when his superior orders him to send another informant to spy on the criminal operations of Barbarian, a vicious gangster plotting a jewelry heist. He seeks ex-convict Ghost, who agrees to work for Don despite vowing to go straight since he's desperately in need of money to repay a debt and save his sister. Ghost's driving skills help him infiltrate Barbarian's gang and earn his trust, but by feeding information to Don and hooking up with Barbarian's girlfriend Dee, Ghost is pushing himself into a tight and deadly corner...

Following his confrontation with the nefarious DOA organization, Ken (Chow Yun Fat) is looking forward to going back to enjoying his retirement. His rest is cut abruptly short when his protégé Vincent (Shawn Yue), who's now working for Interpol, asks for Ken's help in taking down the real mastermind behind DOA, Aoi. The two head to Thailand, where DOA's former chief accountant Mark (Nick Cheung) has escaped with his daughter.

When a terrorist who specializes in explosives takes hold of an underground tunnel, he threatens to kill hostages if his demands are not met.

Rumor has it that “Black Moly”, the Indian head of a gang has returned. His former subordinate Velu is released from prison, he refuses to follow the same path as before. But he is misconstrued by his buddy, Sonu that Velu betrays him. Sonu accepts the task for killing PTU’s Team Head. Sam and May from PTU and Velu can’t easily leave themselves out of account.

Five shorts reveal a fictional Hong Kong in 2025, depicting a dystopian city where residents and activists face crackdowns under iron-fisted rule.

Suitcases of cash fall out of an armored car onto the busy streets, and people go crazy picking it up! Typical loner Jay Kwan (Sing Lam) and his buddy Ang Ray (Neo Yau) are both witnesses, and they're curious about the incident. They then call up a 'search team' on Golden Forum to look into it. Golden Forum Goddess (Larine Tang) is attracted, and joins them. Policewoman Nancy O (Stephy Tang), the money-minded girl Mandy O (Grace Chan)'s sister, is the only one there to guard the money that day even if she's off duty, and is regarded as a heroine! She's therefore asked to join the investigation to the case. Police believe that it's an accident, and it's difficult to get all the money back, so the investigation should stop. But as the 'search team' keep digging, they realize that there's more than meets the eye...

Once famous for his quick blade, a retired assassin can no longer earn a living with his cut-throat skills. Summoned again, he partners with his chauffeur to carry out special missions – fullfilling the wishes of old people looking to kill themselves. When commissioned by a young girl who has been deserted by her parents and lover, the "Elderly's Angel" squad finds an arresting way to complete its task.

After suffering life changing injuries in the line of duty, bomb disposal officer Fung turns his back on the police. But when a devastating series of bombings sweep Hong Kong, the police suspect their former ally may be involved after he is found unconscious at a crime scene. Now faced with memory loss and recalling only fragments of his former life, Fung sets out to uncover the truth and find out who he really is.

A Hong Kong cop is struggling for his survival in the underground world, a place filled with criminals and low life people like moss in rotting hell.