All attempts to thwart evil have failed. Vecna has risen. Tiamat walks on the surface of Toril. The Princes of Elemental Evil rule Dessarin Valley. Demon lords have left the abyss for the Underdark. Devils have dropped Baldur's gate into hell.
And yet, there is hope as a rag-tag team of adventurers comes together to find a way to put an end to it all.