Series synopsis
No Mercy is a South Korean reality television series that premiered on wavve on September 24, 2025. It ended on October 16, 2025. It stars Lee Joo-young, Ji Seung-hyun, Koo Jun-hoe and Seo Jin-won.
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 enc ...
Premise
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?
Cast and characters
Leading cast
- Lee Joo-young as Ha So-min
- Ji Seung-hyun as Ma Seok-gu
- Koo Jun-hoe as Park Jeong-hun
- Seo Jin-won as Ha Hyun-jin
- Lee Ji-ha as Kim Mi-yang
- Min Hye-su as Ryu Hye-dam
- Sung Ki-yoon as Kim Du-sik
- Choi Mu-in as Mr. Kim
Supporting cast
- Choi Yoo-song as Choi Kye-soon
- Nam Mi-jung as In Ye-hyang
- Kim Neul-me as Team Leader
- Shin Soo-Ho as Kim Do-jin
- Jo Young-jin as Seo Joong-geun
- Im Joon-hyung as Mr. Kim Subordinate
- Cha Hyun-seung as Choi Yu-seung
Guest cast
- Jung Geun as Jung In-cheol
- Ham Tae-in as Member
- Choi Seo-yoon as Member
- Park Jae-hong as Member
- Hyesun Cho as Police Officer
- Lee Jae-woo as Kim Kang-sin
- Hong Dal-pyo as Police Officer
- Jeong Jun as Hong-a
- Lee Eun-joo as Florist
- Kim Han-su as Stage Actor
- Yoo Byung-sun as Witness
- Ahn Ryeo-jin as Lee Jae-young
Episodes
This series spans 1 season with 8 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 8 | September 24, 2025 | October 16, 2025 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Missing mother, stolen voice Mi-yang, who is on her way to see So-min's performance for the first time, is kidnapped by a member of the gang after a hit-and-run and goes missing for a week, and So-min begins an investigation with her police classmate Jung-hoon. Hyun-jin remits the ransom, but instead of his wife, only 50 million won in debt remains, and everyone falls into despair amid the kidnapper's ridicule. |
September 24, 2025 |
| 2 |
Mother's Death and the Evil Deeds of the Ilseongpa After her father's death, Ha So Min receives a call in her mother Kim Mi Yang's voice. However, So Min soon realizes that the one behind the phone is Ma Seok Gu using voice technology. Searching for clues, she finds an SOS from Mi Yang and chases a mysterious woman. As secrets unravel, So Min learns that Mi Yang's voice is being exploited by a phishing ring. Consumed by grief and rage, she vows revenge, joining forces with Detective Park Jeong Hun and turning to deepfake herself for a strike. |
September 25, 2025 |
| 3 |
Somin's camouflage, the beginning of infiltration When So-min learns that the Ilsung faction is trying to send the staff of the Dragon God Festival event to the Chinese call center, he uses this as an opportunity to deceive and act out his identity to infiltrate the captain's house of the Ilsung faction. Sensing that Jung-hoon will return to his police status and intervene, he confesses lies to President Kim and makes a new proposal. |
October 1, 2025 |
Production
Release
| Original network/platform | wavve |
|---|---|
| First aired | September 24, 2025 |
| Last aired | October 16, 2025 |
| Runtime | 50 minutes |
| Status | ended |
| Schedule | Wednesday, Thursday at 21:40:00 |