The Journey is a dramatization of the events preceding the historic 2006 St. Andrews Agreement, which brought peace to Northern Ireland after years of violent strife between Unionist and Republican factions.
Protestant minister and DUP leader, Ian Paisley, and Sinn Féin MP, Martin McGuinness, are arch-enemies, each deeply involved in the Troubles. They've both agreed to participate in the British-organized talks, but many doubt their capacity to bury the hatchet.
Paisley has to break from the talks for a family event and McGuinness goes along for the ride. Neither knows that their seemingly innocent driver is a British agent, the van is bugged, and a very nervous Tony Blair is watching in desperate hope that these old antagonists can settle the matter during the afternoon detour.