Playing on:
- Episode 20
- Episode 19
- Episode 18
- Episode 17
- Episode 16
- Episode 15
- Episode 14
- Episode 13
- Episode 12
- Episode 11
- Episode 10
- Episode 9
- Episode 8
- Episode 7
- Episode 6
- Episode 5
- Episode 4
- Episode 3
- Episode 2
- Episode 1
When her older sister Lee Kyung-mi is murdered while undercover in the criminal underworld, Yoon Soo-min is driven to pick up where Kyung-mi left off. But in the shadows, there are no rules and no reason; Soo-min falls for the organization’s drug kingpin, “The Doctor’s Son,” who also happens to be the prime suspect in her sister’s murder.