Suatu hari, sebuah tombol ajaib tiba-tiba muncul. Karakter dari KonoSuba, Overlord, Re: Zero ? Memulai Kehidupan di Dunia Lain, dan Saga of Tanya the Evil semua menekan tombol , tanpa disengaja dan pindah ke sebuah paralel isekai baru lainnya di mana cerita baru tentang kehidupan sekolah menengah dimulai . mereka bergabung dengan karakter dari The Rising of the Shield Hero dan Cautious Hero: The Hero Is Overpowered but Overly Cautious.
One day, a magic button suddenly appears. The protagonists from KonoSuba, Overlord, Re: Zero ? Starting Life in Another World, and Saga of Tanya the Evil all press the button occasionally, unintentionally and move to a parallel word another brand new isekai — where a new story featuring high school life begins. Soon, they are joined by protagonists from The Rising of the Shield Hero and Cautious Hero: The Hero Is Overpowered but Overly Cautious