While undergoing Animus sessions at Abstergo, Desmond was put into the genetic memories of Altair Ibn-La'Ahad, a Syrian Assassin who battled the Templars during the Crusades. At first, Desmond struggled with the memory hunting within the Animus, which caused Vidic and Stillman to argue about how much exposure Miles had to the device. The previous user, Subject 16, was driven insane by prolonged use, and Stillman advocated for Desmond’s time in the Animus to be measured. Vidic conceded, and shortly thereafter, Desmond had a breakthrough.
While reliving Altair’s experiences, Desmond saw a map with key locations of valuable Pieces of Eden marked out, which is exactly what Abstergo was hoping to find. Vidic wanted to dispose of Desmond once the map was discovered, but Lucy advocated for his safety, indicating Desmond may be useful again in the future.