Japan"s engineered exosuit, Infinite Stratos (IS), is designed for female pilots only. Its sheer strength and battlefield effectiveness prompted a global treaty that forbids its deployment as a conventional weapon.
When authorities learn that 15‑year‑old Ichika Orimura is the sole male capable of controlling an IS, he is compelled to enroll at Infinite Stratos Academy—a female‑only boarding institution that trains future IS aviators. There he reunites with childhood companions Houki Shinonono and Lingyin Huang, and meets Cecilia Alcott, a British IS liaison.
Under the tutelage of legendary flyer Chifuyu Orimura—strict homeroom instructor and Ichika"s elder sister—the trio must harness every skill to protect themselves and their academy from the perils that surface during their exhilarating school years. Their bond is tested by political intrigue, rival factions, and the looming threat of a rogue IS pilot seeking domination. Together they must learn to trust each other"s instincts and face the past.