海娜的家族有個驚人的祕密，她因而備受困擾，在一次聚餐中發生了意外…

海娜為了解開家族的詛咒，天天黏著書元不放，她是否真能達到目的…

海娜在學校默默幫書元掩飾怕狗的祕密，書元因此對海娜產生了好感…

海娜和書元一同參加同事婚禮，兩人之間開始滋生曖昧情愫；海娜為瞭解除詛咒，找了崔聿幫忙，結果卻出乎意料…

嘉藍高中爆發霸凌，積極出面的書元引來加害同學報仇，變成狗的海娜用了意想不到的方法…

海娜未能在畢業旅行前解開詛咒。而畢旅期間學生偷溜出去引發了騷動，海娜為了尋找學生，在陌生之處便成了狗…

海娜鼓起勇氣想對書元坦承一切，而以往欺負書元的同學，再次找上了他…

海娜能解除詛咒的日子所剩無幾，而此時她卻收到了神祕的訊息，對方似乎知道她的祕密…

海娜解除了詛咒，並與書元確認過彼此心意，兩人開始了秘密戀愛…

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 was 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 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 shared 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.