Kim Dahyun has a trauma for love and trust issues that was caused by her past heartbreaks. She had vowed to herself that she will no longer love any man and would finally cage her heart from now onwards. But all of this was soon forgotten once she laid her eyes to the new transferred student, Park Jimin. It turns out that the man is willing to repay her feelings back, but after everything that happened, is she still willing to forget about the past and bravely risk her heart again?