After Jin Tae and Ma Ri meet Jang Soo and Yoon Ja, they learn that Na Young is Su Ji's sister. Yoon Ja is ecstatic about Na Young's pregnancy, and Hyun Sung is shocked that Na Young and Su Ji are sisters. Su Ji plans to visit her parents after a long time, and Sun Young, who learns of this, calls Jang Soo to keep his mouth shut. Meanwhile, a heart-fluttering moment occurs when Doo Ri visits Do Young to nurse his summer cold. (Source: Viu)