Police officer Yoon-mi arrests the leader of an organ trafficking organization called the Shadows.

Yoon-mi can't rid herself of her suspicions about Do-hyung and begins to tail him.

Yoon-mi's suspicions deepen as loan shark Hak-soo is found dead in Do-hyung's car.

Joo-young's blood is found in Do-hyung's house, and the police suspect Do-hyung of killing her.

Do-hyung learns Joo-young's location from Jin-sook and heads to Incheon to find her.

Joo-young and Do-hyung are reunited but again faced with unexpected trouble.