The details of undercover police officers are deleted from a police database and a senior officer is left struggling to know who are the undercover officers and who are the criminals.
You can now watch Line Walker online on the following streaming providers in the United States.
| Production | Tommy Leung Ga-Shu | Producer |
| Editing | Wai Chiu Chung | Editor |
| Crew | Kenny Tse | Cinematography |
| Production | Wong Jing | Producer |
| Directing | Jazz Boon | Director |
| Sound | Yusuke Hatano | Music |
| Writing | Cat Kwan Ho-Ming | Writer |
| Crew | Chi Shui-Tim | Pyrotechnician |
| Crew | Chan Chun Fung | Stunt Double |
