Overview: Moon Hyun asks her sister-in-law, Choi Sang-mi how she can break Moon Hee and Yoo Jin up. Sang-mi reminds Moon Hyun that Yoo Jin has a kind of obsessive-compulsive disorder and cannot stand people who lie. She instructs Moon Hyun to find out what happened during the 2 years that Moon Hee spent away from their home. Moon Hee, who has spent a fun day together with Ha-neul, embraces him in her lap and tells Kim Young-chul that a child she knows is also 11 years old and has the same birthday as Ha-neul. Meanwhile, Jang Han-na is worried sick since Young-chul and Ha-neul have gone to meet Moon Hee, but they haven't called her. When Young-chul returns home, Han-na is so upset that goes out and heads to Cheonggyecheon Stream. Walking at Cheonggyecheon Stream, she sees a woman who resembles Ha-neul's birthmother walking towards her and her heart begins to pound.