Assassin's Creed: Revelations

The story is set in a fictional history of real world events set in three time periods, and features three returning protagonists; Altair Ibn-La'Ahad in 12th and 13th century Masyaf, Ezio Auditore da Firenze in 16th century Constantinople, and series protagonist Desmond Miles in 21st century America. The main story follows the Assassin Ezio's journey to unlock the secret of Altair's vault in Masyaf using disc-like artifacts containing Altair's memories. Intersecting with these historical events are the modern day activities of Desmond, who relives Ezio's memories to find a way to fight against the Assassins' enemies, the Templars, and to prevent the 2012 apocalypse.