"Hello, I’m Chae Sooah. Nice to meet you." Sooah transferred to a small, quiet village school. Her cousin Yeongmu was excited about her arrival. But on her first day, Sooah shocked everyone by freely wandering around the classroom during lessons, and her unpredictable behavior kept putting Yeongmu in awkward situations. The teacher, knowing they were cousins, asked Yeongmu to look after her. His family urged him to take care of her, while the other kids teased him because of her actions.

Over time, though, he begins to see that, despite her unruly behavior, she has her own unique personality and strengths. As he starts to realize they are simply different, will he be able to get along with her?