女の子に大人気のTVアニメ「Yes!プリキ ュア5 GoGo!」の劇場版。夢原のぞみはサンクルミエール学園に通う元気な中学生。チョコラという少女を助けたことで、お菓子の国「デザート王国」に招待される。お菓子を堪能するプリキュアたちだったが、そこに悪者ビター、ドライ、ムシバーンが現れ、プリキュアたちをお菓子にしてしまおうと企んでいた……。It's Nozomi's birthday, but it is disturbed by Bunbee chasing after a girl from another world, Chocola. When Pretty Cure rescue her, she thanks them by taking them to her country, Dessert Kingdom. In this cockaigne with rivers of juice and candy growing on trees, they feel very comfortable. But then they meet the evil Mushiban and his two subordinates Dry and Bitter. They want to take over the kingdom and change Pretty Cure into sweets. In order to save not only Nozomi's Birthday but also the whole Dessert Kingdom, Pretty Cure have to fight their way against Dry and Bitter and also against their own friend: Coco, who is being brainwashed by Mushiban.