
Ye-seo and her older sister, Ye-jin, are living together due to a sudden reassignment. Despite Ye-jin initially being unhappy about the situation, they eventually find happiness in their sisterly bond. However, Ye-jin is struggling with her relationship with her lover, Kyeong-soo, and decides to end things with him. Despite feeling that Kyeong-soo is a good person, she doesn’t find him exciting anymore. So, she confides in Ye-seo and suggests that she takes Kyeong-soo instead.