No Mercy

One phone call was enough to shatter one's entire world. For unknown actress So Min, everything collapses when a voice phishing scam tears her family apart. She is thrust into the darkest side of technology as her missing mother, father's death, and even the stolen voice of her late mother become weapons in a shocking scheme. With nothing left but the will to take revenge, she turns to deepfake technology as her ultimate weapon, infiltrating a vast and merciless syndicate. Along the way, she encounters Ma Seok Gu, a ruthless boss hungry for power, Jeong Hun, a cop torn between truth and loyalty, and Do Jin, a hacker with a sinister smile. Plunging into a web of betrayal and danger with the fake identities she forges, will she exact vengeance, or will they destroy her?

Directed by —, No Mercy leans on a strong ensemble — Lee Joo-young, Ji Seung-hyun, Koo Jun-hoe — to carry a story that balances spectacle with character.

The series landed with audiences for its craft and performances, and remains one of the most talked-about crime titles of 2025.