The murder of Bryan Mills' sister sets him on a path towards revenge against cartel boss Carlos Mejia. A secret US intelligence recruits Bryan to be a member of its team.

Bryan goes on his first mission in the field, which soon takes a turn that ends in tragic death. The team discover that a group of government officials a skimming refugee funds.

The team's hunt for a suspected terrorist leads the to a plot within their own government. Christina receives some concerning news, and Asha is worried about Bryan's obsession with Meija.

Riley's determination to find the truth behind a deadly drug given to war veterans leads to disastrous consequences. A new neighbour attempts to calm Asha after her apartment is broken into.

Christina commands that a series of sensitive documents be obtained from Zurich as they are needed to prevent an economic and political disaster.

The ODNI is tasked with helping the defection of a Russian FSB agent. Meanwhile, Christina goes to extreme lengths to expose a mole within the CIA.