Kang-se decides to move into Marie's house. This sets off new tension within the household. Eun-kyung stubbornly pushes her own agenda, despite opposition from everyone in Marie's family. Meanwhile, Mi-ryoung uncovers the long-hidden truth behind Marie's birth. She cruelly uses it as leverage, blackmailing Si-ra into breaking up with Poong-ju. As the situation spirals, Ki-sik is shaken by devastating news. He rushes to Poong-ju's office, fearing the consequences of what is about to unfold.
