雛人形の頭師を目指す五条新菜（野村康太）は雛人形に一途すぎるがゆえ、同世代の友達と趣味が合わずクラスに馴染めずにいた。ある日、家のミシンが壊れてしまい雛人形の服が作れずに困っていた新菜は、高校の被服室でミシンを借りることを思いつく。早朝誰も居ない被服室で新菜が服を作っていると、そこにクラスの中心的な存在、喜多川海夢（永瀬莉子）がやってきてしまう。海夢はギャルで明るく、新菜にとっては住む世界が違う存在。そんな海夢に服を作っているところを見られてしまった新菜は、驚きのあまり雛人形を床に落としてしまう。過去のトラウマから咄嗟に雛人形を隠す新菜だったが、海夢は新菜が想像していた反応とは違い、雛人形を見て褒めてくれたのだった。そんな新菜に対して海夢が突然、裁縫のできる五条くんに見てほしいものがあると服を脱ぎ始め―。
Gojo Niina, who aims to become a doll head maker, is too devoted to dolls and has trouble fitting in with her classmates because her hobbies are not the same as her peers. One day, Gojo's sewing machine at home breaks down and she is unable to make clothes for dolls. Niina comes up with the idea of borrowing a sewing machine from the clothing room at her high school. While Gojo is making clothes in the empty clothing room early in the morning, Kitagawa Marin, a central figure in the class, comes in. Marin is a cheerful gal who lives in a different world than Gojo. Gojo is so surprised when Marin sees her making clothes that she drops the doll to the floor. Gojo immediately hides the doll due to a past trauma, but Marin's reaction is different from what Gojo expected, and she praises her for looking at the doll. Marin suddenly starts taking off her clothes, saying that she wants Gojo, who can sew, to see something.
