Chae lives in a small rural town, but by chance, she gets an opportunity to become an intern at the company where her older sister, Yeon-ah, works. For Chae, who is starting her life as a novice in society, everything feels unfamiliar, and she struggles to adapt, feeling dissatisfied. Yeon-ah tries to help Chae adjust by spending time with her and secretly assisting her with work tasks. However, the more Yeon-ah's attention increases, the more Chae feels alienated and wants to spend time alone. Eventually, Chae meets her long-time friend Su-yeon and starts painting again, something she had abandoned. When Yeon-ah learns that Chae has started painting again, she recalls past events...