St. La Luna Fantasy Academy. Here, they trained first-class adventurers who could handle any situation, and dispatched those adventurers (parties) in response to requests from clients. For this reason, strong people from all over the continent who aspired to become ``first-class adventurers'' gathered and took on challenges day and night. One day, Chara, an unruly character who is rumored to be the school's greatest enemy, and Chris, an honor student, pair up to work on a training task...