After encountering a Vouivre, a notoriously perilous monster, Bell Cranel, the leader of Hestia Familia, is bewildered. Contrary to its notoriety, the monster is weeping and scurries away from a team of adventurers. The monster, disguised as a frightened young girl, impels Bell to hastily shelter her. Little does he know that his compassionate deed will trigger momentous consequences that will reverberate across Orario city.