As the new season of this totally re-imagined show opens, Martin Odum is a fugitive, hiding out in present day London and wanted by the FBI for a crime he did not commit. He can't remember his life prior to an injury he suffered in the Iraq War, so he's searching for clues about his true identity with the help of CIA agent Nina Brenner. Meanwhile, in 2001, FBI agent Curtis Ballard and his Czech Police partner, Gabi Miskova, launch an investigation into a Russian gangster named Dimitry.

It's a race against time as Martin searches for Kate in Paris. He's convinced the peaceful protest she's attending may turn violent at the hands of her friend Ifti, a boy with radical beliefs. In 2001 Prague, Dmitry discovers that the key to getting close to Doku Zakayev may not be his brother Tamir, but instead Doku's wife, Ilyana. In 1991 Lithuania, a younger Ballard is involved in an incident that will affect the rest of his life.