Jin-tae finds out that Ma-ri has reached out to Sun-young for help to order a DNA test, and Yoon-ja overhears a shocking conversation while hiding in Na-young's room. Su-ji asks to see Hyun-woo's room while visiting Ma-ri with U-ri and learns that the room has been emptied out. Meanwhile, Ma-ri's growing obsession with U-ri makes Hyun-sung anxious.
