A great darkness has fallen over the port town of Baldur's Gate and the surrounding lands. Thieves and brigands roam the countryside, and they have driven you and your family from your farmland home. On a desperate rush to seek safety within the walls of Baldur's Gate, your hopes are dashed when you and your family are ambushed on the road by a group of thieves... thieves who claim to have ridden from Baldur's Gate to find you. Scattered by the suddenness of the thieves' attack, you return to the scene of the ambush to find your sister has been abducted. You must find her before whatever terrible plots involving her unfold. Yet once you arrive in Baldur's Gate, you find that you are all that stands in the way of one of the greatest threats ever to strike Baldur's Gate and the Sword Coast. From the streets of Baldur's Gate, to the wind-torn peaks of the Sunset Mountains, to a final showdown in the deadly Marsh of Chelimber, your quest to rescue your sister escalates into staving off a war that will drown the Sword Coast in blood. Spread over three acts, this tale of intrigue and fierce alliances pits the player against myriad challenges, each one bringing the player closer and closer to the revelation of truth and the bittersweet realisation of vengeance.