Haruka Haruno, a young girl who wishes to be a princess, meets a strange boy named Kanata who encourages her dream and gives her a special charm. Several years later, Haruka enrols at the prestigious Noble Academy boarding school, where her new roommate, Yui Nanase, shows her around the campus. Whilst hiding in the woods over her embarrassment over revealing her dream, Haruka comes across Puff and Aroma, two fairy siblings from the Hope Kingdom. Just then, they are approached by Close, an emissary from the evil DysDark organization, who traps Yui's dream of becoming an author in a Gate of Desperation to create a monster known as a Zetsuborg. As Haruka becomes determined to protect Yui's dream, her charm turns into a Dress Up Key, which Haruka uses with the Princess Perfume the fairies brought with them to become the Princess Pretty Cure, Cure Flora. Using her new powers, Haruka manages to defeat the Zetsuborg and rescue Yui. Afterwards, Puff and Aroma reveal they were sent in search of the Princess Precure by Kanata, who is revealed to the Prince of the Hope Kingdom.
この春、中学１年生になる春野はるかの夢は「プリンセスになること」。
あこがれの『ノーブル学園』で寮生活をスタートさせ、
気分はワクワク、はるかの心は幸せ満開！！
りょうの中は、すべてがキラッキラ！ス・テ・キすぎる！！！
はるかは、さっそくルームメイトの七瀬ゆいとお友達に。
お互いの夢を話し合い、ゆいは「えほん作家になるのが夢」
と教えてくれるの。
でもはるかは「プリンセスになりたい」という夢を、
はずかしくて言い出せず、その場からにげだしてしまうの・・・。
そんなとき、いきなり白とピンクのふわふわしたなにかが草むらから
飛び出してきた！
え！？ タヌキ！？ ワンコ！？
はるかがちかづくと「タヌキじゃないパフ」って・・・。
え！？しゃべったー！！
そこへ、おしゃべりするインコも飛んできて・・・。
いったい、どうなってるの！？
