Everyone is already dead in the Underworld. It's time to join the factions of Bone, Flesh and Spirit as they work to achieve the goal of the Underworld: to gather enough forces to take on the celestials of Heaven and Hell to end their ceaseless war. If the players work diplomatically in Court of the Dead: Mourners Call to maintain a balance, they can ensure the Underworld survives long enough for them to also complete their collective and hidden individual objectives. The player who best contributes to these goals will earn Death's favor and a place among the elite of the Underworld.

You are a Mourner-an allegiant of Death-dedicated to realizing his noble ambition to end the celestial war and restore balance to the universe. However, Death's purpose includes your own ulterior motives. You and your fellow Mourners must unite and rise, or fall together. But only one Mourner will achieve their particular vision of the Underworld united. Your task will not be easy. While the Underworld is united in its purpose, it is divided in its strategy to achieve that aim. There are three factions in the Land of the Dead: Bone, Flesh, Spirit. Each is a unique path to rise up against Heaven and Hell.

You will need to strategically manipulate your influence within these factions, their strongholds and guilds, and within the Court of the Dead if you wish to achieve your ends. But beware: The power within mortal souls-known as Etherea-is a perilous substance. Use it carelessly, and you risk invoking the Dreadsgrip: a destructive force within every Mourner that consumes all it touches, including its former master. Failing to satiate the celestials' war need, or triggering the Dreadsgrip, has dire consequences for all Mourners. Are you strong enough to achieve your own ambitions and be the champion for the uniting force for which all Mourners Call?