A police officer dies from infection inside the station, so the new chief seals the building to contain the outbreak - trapping Audrey, Nathan, Duke and Evi inside.
Jake tries to find a missing driver; Leslie offers to help Jake and the Doyles; Mal and Des reach rock bottom.
Nikita and Michael plot to take down Division and Oversight, and are prepared to use the contents of the black box to do so. Amanda is now running Division, but Oversight has assigned one of their own, a new agent named Sean to keep an eye on her.
Percy makes a move to take over the CIA; Alex goes rogue; Michael gets trapped inside Division making him unable to help Nikita, who may have to pay with her life for helping Alex.
Jake traces a sketchy money trail; Leslie faces some conditions upon her return to work; Jake is forced into making a deal.