Yoo Jae-i and Woo Seu-Igi were never just competitors, yet not only were they competing and challenging with one another, but it was also about understanding each other in a way that no one else could. However, things are starting to change. It became more than just competitors. Jaeyi's past is getting closer and her father is determined to look for her. Moreover, no matter how far she runs, she knows that she can't run forever. Woo Seulgi is undecided whether protecting Jaeyi's decisions or wondering if she's the only person who can get Jaeyi to stop running away. Seulgi can't deny the way Jaeyi treats her, like their bond and connection goes beyond than just a friendly competition. The feelings are complicated, and so is the past. As truths unravel and Yoo Jaeyi's father gets closer, they're forced to confront the question neither of them are ready to answer. What happens when the competition turns into something else? and are they ready to face what's beyond rivalry?