August 2011. Terrorist operative Amer Al Zaroor masterminds and executes the theft of a Pakistani military weapon: a two-hundred-pound nuclear warhead, capable of causing destruction on an unprecedented scale. A chilling transmission is then broadcast to the world, in which Osama Bin Laden pledges to attack a major US city on the tenth anniversary of 9/11. Intelligence indicates that the bomb has been smuggled out of Pakistan and is en route to the US, with Washington or New York the suspected target. However, this is a clever decoy set by Al Zaroor.