The Slayers takes place in a magical world set up like a classic Japanese role-playing game, with four schools of magic (Black, Holy, Shamanistic, and White) that draw power from different sources at the center of a simmering cold war between dueling God-like beings. The first series, composed of 26 episodes, starts with the pair trying to stop Zelgadis, a combination of a human, golem, and demon, from resurrecting the fallen demon king.
Along the way, they pick up strange new allies, acquire magical artifacts, and learn the true nature of their world in what’s basically a Dungeons & Dragons campaign in anime form.