Moo Goong Hwa is a former boxer. After the death of her husband, she has raised her daughter alone. She now works as a police officer. Meanwhile, Cha Tae Jin is an elite police officer who graduated from the police university. He is full of justice.

• Im Soo-hyang
• Do Ji-han
• Lee Chang-wook
• Lee Eun-hyung
• Park Gyu-ri
• Lee Eung-kyung
• Nam Bo-ra
• Park Hae-mi