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.

The deceased Seok-jin appears as a murder suspect after 25 years, and Yeon-joo summons Moon-young's sealed past. In a desperate crisis that no matter what you can do, the trial date approaches, and Moon-young finds herself at a crossroads.

Moon-young chose to attack head on. But Ha Yeon-joo has no intention of stopping here. Ha Yeon-joo is even more furious at Moon-young's choice, and sets her sights on Cha Bom, the last and most precious being to Moon-young.