Backdrop for the drama series is set at a small police station. Moo Goong-Hwa (Lim Soo-Hyang) is a former boxer. After the death of her husband, she has raised her daughter alone. She now works as a police officer. Cha Tae-Jin (Do Ji-Han) is an elite police officer who graduated from the police university. He is full of justice.
Yong-pal is a 2015 South Korean drama series starring Joo Won, Kim Tae-hee, Chae Jung-an and Jo Hyun-jae. Kim Tae Hyun is a talented surgeon. Desperate for money to pay for his sister's medical bills, he adopts the code name Yong-pal and offers his medical skills to those in need of medical attention but who cannot do so publicly, dealing with criminals and corrupt plutocrats. Joining a team of corrupt physicians Kim rescues "sleeping beauty" Han Yeo Jin, a chaebol heiress, from a medically induced coma, leading to unintended consequences.