When the location of Zayef's hideout is compromised, S20 raids the premises, leading to a confrontation that finds Mac defying orders to keep his team members safe. Suspecting that Zayef plans to deploy the stolen military tech during a United Nations conference in Munich, S20 heads west, where a showdown of epic proportions awaits.

Spencer joins S20 to take down Zayef for good. But when intel leads them back to the Demachi's, S20 finds itself embroiled in a feud that may expedite Zayef's plans and place military-grade weapons in the hands of terrorists across Europe.