Game description from the publisher:

Emerging from The Drúadan Forest, Middle-earths heroes begin their return journey to Minas Tirith, but dark plumes of smoke rise across the lands of Anórien. Amon Dîn is burning, and it falls to your heroes to save the villages citizens from the spreading fires and the threat of an Orcish siege.

Encounter at Amon Dîn, the third Adventure Pack in the "Against the Shadow" cycle for The Lord of the Rings: The Card
Game, is the tale of a dramatic rescue mission – but whether the mission succeeds or fails is up to you! Youll have to move quickly, battle Orcs, and fight fires, and youll need to take advantage of whatever assistance you can find. This time, youre not just fighting for your lives; your fighting for the lives of everyone in Amon Dîn!