The Worst of Evil (2023)

Same vibe , 2 cops that infiltrate to a gang and try to hide their identity. Both coming from poor background. Lots of fight scenes.

Luo Xiang, a former narcotics agent, faked his death during an undercover operation. Five years later, he's living under a new name, but needs to pretend to be his old self and once again infiltrate the drug cartel, dealing with his former lover, brothers and enemies, to finally successfully complete the mission and find out who's pulling the strings.

Both deal with undercover crime investigations. Similar gritty and gripping stories. Cruel City was a little less organized with its plot and The Worst of Evil had a better setting/cinematography overall, especially being set in the 90’s. But if you liked one, you will probably enjoy the other.

Basically if you like dramas about undercover cops infiltrating cruel gangs with damn good action, try it!

Set in Seoul in the 1990s, a former DJ starts selling a new powerful drug nicknamed "Gangnam Crystal" in city nightclubs after mastering a gangster organization. Since the police know little about the origin of such drugs, in order to crack down on this rampant drug trafficking organization, rural police officer Park Jun Mu is assigned to sneak into the organization, only to discover that his wife, Yoo Eui Jung , also a detective, has volunteered to participate in this dangerous mission and seems to have an unspeakable past with the heinous underground drug king. Park Jun Mu in this drug-related mission, not only does he wholeheartedly fight the drug cartel, but also works hard to protect his wife's safety at all times.

- The plot is similar as it gives the similar vibes
- ML is an Undercover Cop (TWOE - Drug Trade , NW - Crime Organization)
- ML tries his level best to catch criminals before his identity getting exposed

Both involves the main character as an undercover cop infiltrating a crime syndicate. Difficult situation of preventing identity from getting exposed.

- The plot is similar only difference is this happens inside the prison
- ML is an Undercover Cop but in the prison he comes to take revenge on those who killed his younger brother
- ML tries his level best to catch criminals before his identity getting exposed

- The plot is similar as it gives the similar vibes
- ML is an Undercover Cop (TWOE - Drug Trade , TM - Crime Organization)
- ML tries his level best to catch criminals before his identity getting exposed

- The plot is similar as it gives the similar vibes
- Only difference in Insider is that ML is an Undercover Judicial Trainee for investigation in crime and gambling world
- ML tries his level best to catch criminals before his identity getting exposed

Both productions have a similar premise where policemen go undercover to catch the drug lords, earning the trust of gangleaders and climbing the ranks rapidly

A former spy hiding his real identity to his wife. Kinda give similar vibes in husband and wife relationship

An undercover policeman inside a drug trafficking ring And also the friendship relationship between the secondary hero and heroine
The heroine also interferes with the gang to protect the hero
Moving between the entry stage to prove oneself to trying to dismantle and arrest the entire gang
It is also sad that at the end of both, the dual hero dies after discovering his friend's betrayal

Unlike the woman is the wife and not the sister this time, I find similarities between the two, like two men who can't get along and will betray each other

The wife is a female police officer who follows the right path. Her husband must lead a double life was a barrier to his wife's investigation