The Garden of Hope doesn't exist to be pretty. It exists because Nagisa and Honoka have already saved it once, and now they have to save it again, knowing what the cost of failure actually looks like. This movie doesn't reset them into new uniforms and call it growth; it drags three girls who earned their power into a fight that asks if they're willing to spend it all on a world that isn't even theirs. The witch isn't a villain. She's what happens when someone decides one kingdom's water is worth burning down everything else.

A magical kingdom in danger calls for help, and three girls answer: Nagisa, Honoka, and Hikari are summoned by the Courageous Warriors of the Garden of Hope to defend it. A witch has set her sights on the Diamond Line, jewelry the queen wears each year at a ceremony that refills the kingdom's water. But the witch's ambitions run deeper. She means to bring back the Dark Lord, and his return would destroy not only the Garden of Hope but other kingdoms across the galaxies, including the Garden of Rainbows and the Garden of Light. The result is a magical girl movie blending action, adventure and fantasy, with the fate of several worlds at stake.