After a fatal car crash, Tsubasa Kurata—an anime fan from Japan—awakens in Fremmevilla, a medieval realm where towering Silhouette Knights battle terrifying demonic beasts that roam the land. Born into nobility as Ernesti Echevarria, he possesses innate talent and enrolls at Royal Laihaila Academy to master the art of piloting these colossal machines. The school trains pilots to command Silhouette Knights, teaching them advanced combat tactics and the responsibility of protecting the realm from both demonic incursions and human conflicts. Ernesti partners with twin siblings Adeltrud and Archid Olter, aiming to build his own Silhouette Knight—a daring ambition that would break a centuries-old taboo. If successful, he would rewrite history and inspire generations.