Moon-young breaks down in front of the evidence sent by Yeon-joo, and to make everything right, she arrests Sung-jae with her own hands. Meanwhile, another secret that will stab Moon-young is revealed.

Moon-young's world has collapsed. Sung-jae and Yeon-joo reveal their hidden true colors. Moon-young discovers that there is a bigger plot behind their evil deeds, and she and Jin-woo prepare a shot to turn things around.

Sung-jae and Yeon-joo are able to easily escape Moon-young's trap after enjoying their victory for a while. Moon-young senses that there was some sort of deal with the embezzlement victim. Meanwhile, a murder case occurs at Yeon-joo's house, and Moon-young falls into panic the moment she sees the suspect.