The ninth main quest of the Dragon Age: Origins video-game. The story follows the player and company's final battle in Denerim with the archdemon and its darkspawn horde in order to bring an end to the Blight.
Once the matter of the Landsmeet is done, the Warden and their companions head back to Redcliffe, where the darkspawn are rumoured to be moving to attack. However, after fending off an attack on Eamon's castle, they discover from Riordan they have been duped; contrary to what all their intelligence suggested, the bulk of the darkspawn horde has circled around them and is now moving to attack Denerim. With most of its soldiers having gone to reinforce Redcliffe, the capital city is all but defenceless and to make matters worse, the archdemon itself is personally leading the attack. The gathered forces decide to make a forced march back to Denerim; if they can kill the archdemon before it and its army move on from sacking the city, they can end the Blight before it spreads beyond Ferelden. In private, however, Riordan explains why the Grey Wardens are essential to stopping the Blight; while archdemons are not invulnerable, if an ordinary warrior strikes a fatal blow against the dragon, its spirit will survive its body's death and find a new host in the nearest darkspawn, making the archdemon effectively immortal. If a Grey Warden deals the killing blow however, the archdemon's spirit will be drawn into the Warden's body, killing them both. Riordan is willing to make that sacrifice, but warns the other Wardens they must be prepared to do the same if needs be.
It is after this meeting that Morrigan confronts the Warden in their chambers and offers an alternative: a magical ritual that involves a Grey Warden conceiving a child with her. The child will possess the taint and at such an early stage in its development, absorb the archdemon's spirit without perishing, ending the Blight but sparing the Grey Warden the need to die to do so. In return, Morrigan gains a child born with the soul of an Old God, effectively a demi-god that she intends to raise by herself for her own ends (Morrigan freely admits this has been the sole reason she accompanied the Wardens, and the sole reason Flemeth saved their lives at Ostagar). The Warden can either sleep with Morrigan or, if they are unwilling or female, convince Alistair or Loghain to do it. If her offer is refused, Morrigan leaves.
The Wardens and their army march to Denerim and a bloody battle ensues between the forces they have gathered and the darkspawn rampaging through the city. In the course of the battle, Riordan is able to cripple the archdemon to stop it escaping Denerim, though doing so costs him his life. Fighting their way through the city, the Warden confronts the archdemon at the summit of Fort Drakon, a fortress that is the tallest building in the city, and after a climactic final battle against the archdemon and the darkspawn trying to defend it, brings the dragon down. If the ritual with Morrigan is performed, the Warden automatically deals the fatal blow; if not, they must decide whether they or their companion will sacrifice their life to kill the monster. Either way, the archdemon is slain, and the darkspawn horde, robbed of the will to fight on without their leader, retreat from Denerim in disarray, bringing the Fifth Blight to an end.
The story concludes with the new monarch of Ferelden being crowned. The Warden and their companions are then honored for their bravery in fighting the Blight, and is followed up by an epilogue detailing the consequences of the Warden's choices over the course of the story for Ferelden and Thedas.
