As the girls investigate a mysterious happening with the final castle, the Flower Castle, Haruka follows a bird inside the castle, trapping her inside. When she wakes up, Haruka finds she has become the Flower Princess from her book, living a life of luxury with a charming prince while slowly forgetting about who she was. Meanwhile, the others learn that this is a trap laid out by Dyspear, who plans to trap Haruka in her dream forever while sending Stop and Freeze to attack them with a Butterfly Zetsuborg. Despite initially enjoying the world she is in, Haruka soon realises there is no beauty in a dream that is granted without effort, allowing her to break free from the world Close created. With Haruka feeling strength from her dream, even if it may never end, Haruka and the others defeat the Zetsuborg and restore the Flower Castle, completing the rainbow and restoring Hope Kingdom to its former glory. Just as the Cures prepare to tackle the Door of Despair, Dyspear sets her sights on Noble Academy.