It was the robot apocalypse of 2020. Since Mark betrayed Pal, Pal went on a rampage and put all humans in a containment cell. You were sneaking into the Pal HQ when a face came up on the large screens around the buildings. The face, who is Pal, said "Attention all robots! The last human has not been captured and might be undercover here. Keep on the lookout for any weird movements."