Jin-ah's been trying to remember her past, so she can find the killer that set fire to her house. But all she remembers is the scar on the offender's back. To find the criminal, she recruits nude models with a scar on their backs.
After Cheol-soo saves Jin-ah, she admits that she may have been wrong about Cheol-soo. However, he unknowingly helps Sung Jin and Song Ja steal a painting from Jin-ah. Meanwhile, the weapon Jin-ah was looking for was in Jeong-nam's hands.
Jin-ah finds out that her paintings have been stolen. She believes it is the nude model's doings and tells Jeongnam to arrest him. At first, Jeongnam chases the real Sung Jin. However,Jin-ah doesn't recognize the real Sung Jin's face.
Jeongnam is on the move to find Cheol-soo. While looking for him, he realizes that Jin-ah is on Cheol-soo's side. He kidnaps Jin-ah and forces her to take aspirin which induces asthma. Will Cheol-soo save her in time?
