The Gangster, the Cop and the Devil (2019)

Yi Hwan is a former professional baseball player. He was involved in fixing games and lost everything. Gang boss Sang Ha runs a money lending business and a gambling location. He makes Yi Hwan work for him. Meanwhile, Yi Hwan falls for bar owner Yeon Soo.

Ma Dong Seok acts in both movies as the "bad" guy that is used to catch a "worse" guy? and both movies have the same concept of cop + criminal, against the more dangerous criminals

A model student transfers to the notorious Jungmoon High School known for its severe corporal punishment by teachers and power struggles between school gangs.

Kim Byung Doo is a charming low-level gangster creeping up on 30 years of age. His youth rapidly fading, Kim has seemingly been on the cusp of making something of himself for years, his natural charisma making him well respected among his peers while a manipulative boss and string of bad luck has kept him firmly locked into his lowly status. When a wealthy industrialist approaches Kim's boss to eliminate a bothersome criminal prosecutor, Kim sees his long-awaited chance to advance and takes it. But all advancement comes at a cost.

Both are action, thriller and has gangster/mob in it.
The good and bad not necessary all fight
Can they really join force? What are they fighting for?

A group of criminals join hands with police . A good and funny drama about friendship and frauds, with action, mystery, crime and funny moment.