One day, a ring goes missing just before the opening of a jewelry exhibition at the department store. Doo-rim finds out it was her friend, Jin-joo who stole it. Doo-rim tries to help Jin-joo by sneaking the ring back in but gets caught by Roo-mi and is falsely accused of being the thief. Gang-joo is disappointed and feels betrayed. But only Yi-hyeon believes in her innocence and cheers her up. By the way, Yi-gyeong and Jae-ran make a plan to sacrifice Doo-rim for house god.
