Deckard Cain scuffs his foot just in front of the ruins of Tristram Cathedral. The stirrings of evil have returned to this world, and these ruins must hold the clues to defeating whatever fresh hell is about to return to the realms of Sanctuary. Just as his hope is fading, Cain spots a glowing ball in the sky.
A fiery harbinger of doom hurdles toward him, falling straight from the heavens. Striking the very ground where Diablo once entered the world, the ancient evils of the past reawaken. The fire burns rapidly and it becomes clear that this world is once again in need of a hero. Will you still have what it takes two decades after the last battle?