Pretty Cure All Stars DX 3: Mirai ni Todoke! Sekai wo Tsunagu Niji-Iro no Hana (2011)

The former nemeses of the Pretty Cure have merged and reincarnated into one colossal being called Black Hole. He intends to find and destroy the Prism Flower, a magical source of light that connects all the different fairy worlds to planet Earth. All Precure must join forces to defeat this overwhelming evil.