Lee Gang Soo (Kang Ha Neul), an online taxi driver, becomes the victim of a false accusation by an unknown person. He is forced to endure harrowing conditions in prison before receiving an offer for a reduced sentence from Ku Gwan Hee (Yu Hae Jin), a highly ambitious prosecutor determined to advance his career. The prosecutor offers Lee Gang Soo the chance to become a yadang—a Korean slang term referring to a drug offender who serves as an informant for law enforcement authorities.

Director Hwang Byeong-guk is known for Wedding Campaign (2005) and S.I.U. (2011). Kang Ha Neul appeared in the Korean drama The Heirs (Kang Shin-hyo, 2013), while Yu Hae Jin starred in the box-office hit Exhuma (Jang Jae-hyun, 2024). Meanwhile, actor Park Hae Joon is widely known for the drama The World of the Married (Mo Wan-il, 2020). Yadang: The Snitch is a gripping film that uncovers a major drug trafficking network extending from South Korea to Japan. The Indonesian Film Censorship Institution (LSF) has classified the film for audiences aged 21 and above. Be discerning in selecting content suitable for your age. (ibn)