In modern‑day Tokyo, three university students, Negishi Miyako (known as Neko‑chan), Saiki Haruka, and Yamagishi Keiichiro, possess magical powers that make them feel like outcasts. One night, they gather and are transported to another world. Together, they open a massive door, and Neko discovers that she is the Princess Neryulla, destined to defeat the evil Duran III and free her people.