No Mercy

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.

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.

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.

Unlike the call center, Somin, known as the luxurious Ilseongpa stronghold, catches Seokgu's eye thanks to her overwhelming skills. Seokgu senses a familiarity yet a strangeness in her, and becomes suspicious of her identity. However, Somin exposes the Heungsam-i faction's spy, averting the crisis and earning Seokgu's trust.