Nozomi and her friends have returned, with their duties as Precure far from finished. The mysterious Flora grants the girls new powers, waiting for them in a location known as the Cure Rose Garden. However, reaching this legendary garden requires the use of a magical artifact called the Rose Pact. The issue is that the heroes do not know how to operate it. Consequently, they seek assistance from the four monarchs of the countries neighboring Palmier. To complicate matters, dark forces are active once more. An evil organization named Eternal is eager to add the Rose Pact to its expanding collection of treasures. Making things worse, the director of this villainous museum appears to have a personal stake in the Cure Rose Garden. Fortunately, the new narrative introduces new allies. Enter Syrup, a courier boy with a poor attitude. His wish to reach the Garden is sincere, but who is he really? Furthermore, who is the new girl in town, and why does she smell like roses?