Realizing that her secret-agent father, Jack (Victor Garber), is connected with the murder of her fiancé, Danny, Sydney (Jennifer Garner) agrees to work hand in glove with the CIA as a double agent, to bring down her present employers at SD-6 once and for all. Sydney's first counterespionage assignment involves locating a missing nuclear device and a deadly arms dealer named Anini Hassan (Aharon Ipalé). Elsewhere, Sydney's journalist friend, Will (Bradley Cooper), begins to suspect that she is involved in something other than your average "outside job," while her CIA connection, Vaughn (Michael Vartan), makes a potentially apocalyptic mistake. ~ Hal Erickson, Rovi