Ju-won and Yoon-seo wake up both in despair after realising what they did and said to each other last night, intoxicated. They try to avoid one another at the company but end up face-to-face awkwardly. Meanwhile, Ju-won's mother reminds Yoon-seo of the promise she had made her, and Yoon-seo's brother gets into trouble at school for school bullying.

Ju-won leaves his family and shows up at Yun-seo's door. His appearance exposes their relationship to the team, who even discover that their breakup was because of Ju-won's family's opposition, causing them to create an unbearable atmosphere for her in the office. Meanwhile, a crisis hits the Hanok Stay grand opening art exhibition, but Yun-seo is away from her desk to handle it.