A 10-minute fever dream that knows exactly what it is and commits hard. The joke is that this fake studio is making a real movie about heroes who costume-change their way through increasingly absurd stakes, and every second counts because there's no time to breathe. When they finally combine powers to fight something stronger than everything before it, you're not watching a climax, you're watching four minutes of pure genre sincerity compressed into the absurd time slot they were given.
After the dark castles fall and their enemy is finally beaten, Scarlett parts ways with the group to carry on alone. Later, while Koto and her friends are together, they run into Scarlett once more. A new and powerful foe has appeared, stronger than any they have fought, and beating him will take all of their powers combined. The short film runs about ten minutes and mixes adventure, comedy and science fiction, presented as the work of an invented studio called Houchiku Movie Corporation.