Our school's three popular boys are a no-brainer to someone!? It's not worth the attention! Hae-Joo, who pursues a quiet, non-existent, ordinary life, has handsome older brothers who stand out just by walking. She goes to school while hiding the fact that she is the younger sibling of her older brothers, but eventually gets caught... Will she be able to achieve her goals in a school where her older brothers are?