The Two Close Friends; Gyu-eun and Yeon-seo, Though their personalities and tastes are quite different, they have built a very special bond over the years. One day both women run into a man named Yoon-jae on two separate occasions. Both of them have a crush on him. Without realizing she loves the same man that her best friend loves, both of them are just happy to find someone special. When Gyu-eun introduces to Yeon-seo Yoon-jae as her boyfriend, Yeon-seo is shocked. When asked about the man that she has been talking about, Yeon-seo names Soo-hyeong, who is just a friend. Soo-hyeong is Gyu-eun and Yeon-seo’s friend. Left without any other choices, Yeon-seo gives up Yoon-jae for Gyu-eun. Even though Yeon-seo tries to avoid Yoon-jae, the four people often hang out together. Despite their families’ disapproval, Gyu-eun and Yoon-jae’s love get deeper and deeper. However, Yeon-seo can’t put Yoon-jae out of her mind. Hiding her feelings about her friend’s fiance, she helps her friend prepare for the wedding.
Yoon-jae and Gyu-eun are Married. Yeon-seo believes that she can forget the man who became her best friend’s husband. However, Gyu-eun has an accident and falls into coma. Yoon-jae doesn’t give up Gyu-eun. Yoon-jae‘s parents who initially weren’t thrilled about his marrying Gyu-eun persuade him to leave Gyu-eun. However, believing that she’ll wake up soon, Yoon-jae legalizes their marriage. Yeon-seo is touched by his love. Since he can’t be by his wife’s bedside all the time, he sometimes asks Yeon-seo to take care of Gyu-eun whenever he goes out of town on business or works late. There isn’t any agreement between the two, but they take turns taking care of Gyu-eun now. Yeon-seo realizes that she still has special feelings for Yoon-jae. She tries to avoid him. Without knowing about Yeon-seo’s feelings, Yoon-jae believes that she blames him for her best friend’s accident. Since Yeon-seo isn’ t sure if she can resist any longer, she volunteers to be transferred abroad and leaves the country.