The Roundup (film series)

[3] Ma Seok-do and his team arrive at Ho Chi Minh City, Vietnam to interrogate a suspect, but later learn about Kang Hae-sang, a vicious killer, who has been committing crimes against Korean tourists for several years and decide to hunt him down.

[8] Ma Seok-do and his team are promoted to Metropolitan Investigation Unit where they battle against Riki, a yakuza and a dirty cop named Joo-seong cheol, who are involved in the manufacture and distribution of a newly-invented drug called "Hiper" which is becoming popular at the clubs around Seoul.

[9] Ma Seok-do joins the Cyber Investigation Team to catch Baek Chang-ghi, a former mercenary and the leader of the most notorious illegal online gambling organization.

In May 2022, at a press event for The Roundup, Ma Dong-seok introduced Crime City as a Korean franchise that will be produced as a series of eight films.

[11] In July, in an interview with Deadline, he revealed that apart from the eight films, two additional spinoffs have been suggested, hence Crime City, in a way, would be akin to Universal’s Fast & Furious franchise.