While on holiday in Marrakech, an ordinary English couple, Perry (Ewan McGregor and Gail (Naomie), befriend a flamboyant and charismatic Russian, Dima (Stellan Skarsgard), who unbeknownst to them is a kingpin money launderer for the Russian mafia.When Dima asks for their help to deliver classified information to the British Secret Services, Perry and Gail get caught in a dangerous world of international espionage and dirty politics. The couple is propelled on a perilous journey through Paris and Bern, a safe house in the French Alps, to the murky corners of the City of London and an alliance with the British Government via a ruthless and determined MI6 agent (Damian Lewis - Homeland).