In a divided world where magic reigns, the city of Eridana stands as a unique blend of two conflicting realms: the Tseberun Dragon Empire and the Lapetodes Seven Cities Alliance, split by the winding Orielal River. Here, individuals wield spell formulas, intricate chemical reactions harnessed through Magic Staff weapons to unleash fantastical powers. Enter Gaius Sorel and Gigina Ashley-Bufh, the sole members of the spell formulist agency Ashley-Bufh & Sorel Co. Tasked with combating the monstrous Beasts of Abhorrent Form, including Dragons and other deadly creatures, the duo navigates a world of diverse clients and challenging missions that test their mastery of spellcraft.