A Good Day to Be a Dog

Hae Na's uncle, Dong Chul, comes back to his human form. Hae Na's family finds it strange that his curse got lifted when he hadn't gotten a kiss. Bo Gyeom reveals himself to Hae Na and tells her that he is the one who put the curse on her family. Then he goes on to tell her that he'll lift the curse only if she gives up her love for Seo Won.

Instead of Seo Won's memories, Hae Na's memories of him get erased, making Seo Won despair. Seo Won does his best to win Hae Na's heart again, but it doesn't go as well as he expected. However, Seo Won finds out that Ji A still has memories of him and Hae Na dating. Meanwhile, Ji A visits the mountain where she died in her past life, which upsets Bo Gyeom.

Hae Na keeps getting reminded of the memories she had with Seo Won. After Seo Won kisses her, Hae Na becomes sure that she and Seo Won share certain memories. The mountain spirit finally realizes what happened to Cho Young and that he was mistaken all this time. He decides to return the memories to Hae Na.

After finding out everything about the curse and their past, Hae Na and Seo Won realize how they feel about each other. One year has passed, and Seo Won's birthday is only ten days ahead. Hae Na wants to give him a present that is unexpected but meaningful. She prepares a special present and plans to give it to Seo Won at the school festival. However, an uninvited guest appears at the school.