Due to an Earth upgrade, the world now boasts a touch of fantasy. Dungeons and monsters have surfaced, and a karmic status system has been bestowed upon multiple lifeforms. Chuunibyou enthusiast Meiko Yotani, among many others worldwide, is devoured by a dungeon stuffed with monsters. Fortunately, Meiko readily shares the fantastic findings she uncovers, enlisting the aid of her town and school to enliven the world. This chronicles the journey of a group of countryside high school girls sprinting through the dawn of a different era, capturing global attention.