EPISODE 1 – Authorized Personnel Only, Part 1
Sydney is recruited into a covert CIA unit called APO – Authorized Personnel Only. The team, comprising familiar faces both friendly and hostile, must travel to Belarus to prevent the sale of a deadly isotope.

EPISODE 2 – Authorized Personnel Only, Part 2
Sydney is reunited with Nadia, who has vital information on APO's current target. A daring museum heist provides the bait to lure the enemy into the open. After a brutal fight to the finish, a dying confession about her mother has stunning ramifications for Sydney.

EPISODE 3 – The Awful Truth
Valta, a powerful computer used for gathering satellite information, has been stolen from the NSA. Sydney goes undercover to locate Valta before it is sold to a German terrorist group. A CIA team led by Weiss only makes things more dangerous for Sydney. Jack gives Nadia information regarding her Irina's death.

EPISODE 4 – Ice
Sydney and Vaughn are sent to obtain a sample of a bio-weapon known as Ice 5, a substance which crystallizes a person from the inside out – literaly "freeze-drying" them to death. But when they discover that Ice 5 is about to be shipped to a buyer in Damascus, they must turn family members against each other in time to stop the sale.