Feeling distant from his family, Sang-sik goes hiking. Meanwhile, his wife, who dedicated her life to housework, makes a shocking announcement.

After meeting Jong-min, Eun-hee confides in Chan-hyuk. The family finds missing Sang-sik hospitalized with memory loss after a fall, delaying Jin-sook's plans.

After receiving Eun-hee's text, Chan-hyuk rushes to the publishing company and sees her with Geon-joo. He then gives Eun-hee relationship advice.

Jinsook visits the Ulsan Factory with Sang-sik and confirms her suspicions. Eunjoo, Eun-hee learn Sangsik attempted suicide and ask him to talk to Eunhee if his memory returns.

Sang-sik and Jin-sook search for Young-sik but can't find him. Eun-hee is devastated by shocking news about Tae-hyung, so Eun-joo stays by her side.

Eun-hee follows Hyo-seok to Goheung to find Tae-hyung, doubting her instincts. Meanwhile, Sang-sik lies about his memory returning, but as it does, he becomes confused.

Chan-hyuk has mixed feelings as he watches Eun-hee deal with so many problems that are not hers. Eun-hee also tries hard not to cross the line as friends with Chan-hyuk.

Eun-hee is taken aback by Ha-ra’s presence and feels trapped by Kyung-ok. Sang-sik seeks Young-sik for memories, and Jin-sook sees a different side of Sang-sik.

Eun-hee uncovers a long-buried secret. Jin-sook and Eun-joo revisit their old town. An alumni couple’s visit to Chan-hyuk’s company reminds him of Eun-hee.

Sang-sik stuns his family with news he’ll care for Young-sik and Yong-gyoo. Chan-hyuk reads Eun-hee’s letters and Ha-ra reveals her past, but Eun-hee remains stern.

Sang-sik clears up Eun-joo’s father’s story with Jin-sook, but the damage remains. Eun-joo hears a secret from Seo-young and plans to restore family relationships.

Eun-hee asks Chan-hyuk about his sadness, and they talk it out. Sang-sik’s attempt to thank Eun-joo makes her sadder, so Eun-hee stays over to comfort her.

Ji-woo asks Eun-hee about Chan-hyuk’s license, but she doesn’t know. Chan-hyuk accepts Geon-joo’s favor and opens up to Eun-hee about his family.

Eun-hee moves on from her past. Jin-sook feels guilty for Eun-joo’s divorce. Jin-sook meets Tae-hyung’s mother. Sang-sik suggests Eun-joo meet her biological father.

Jin-sook comforts Sang-sik by focusing on new memories. Ji-woo causes trouble, and Eun-joo and Eun-hee are unable to explain this to Sang-sik and Jin-sook.

What is a family? Jin-sook, looking back on her life she has dedicated to her family, decides to go back to her 20s and choose to live a life for herself.