With the popularity of "action heroines", many districts have had local heroines of their own, complete with live action hero shows. In Hinano City, Mikan Kise takes her younger sister Yuzuka to a hero show of the most popular local heroine, Kamidaio, only to discover the show had been cancelled at the last minute.

With the girls needing a pink heroine who is knowledgeable about special effects to further improve the shows, Misaki tells Roko about Hatsuri Momoi, a girl who seems perfect for the role but tends to go overboard with her appreciation for her.