As Wyatt is tortured by Vartak's henchmen, Mac presses her corrupt lawyer to hand over an encrypted hard drive that might hold clues to the whereabouts of a pair of "nuclear suitcases." After being sorely tested in a deadly hostage standoff at an office building, the team is forced to lean on Zarkova to commandeer high-end Russian technology, crack the encryption code and make a final foray to a secret hideout, where Vartak, Gopan and the nuclear packages await.

After ditching the seaplane they hijacked, Novin and Zarkova find themselves at the mercy of corrupt police, while Mac and Wyatt take temporary refuge in a local village. Coltrane finally learns the location of the suitcase nukes, but the revelation comes at a high price. Finally, Section 20 tracks down Zaza and the nukes - as well as an unexpected interloper - in a remote compound, and all hell breaks loose. Expecting the worst, Wyatt makes a call back home, while Pavel forces Zarkova to come to terms with what happened to Alpha Group.