Keith Davis, the British ambassador to Tazbekistan, is tasked with securing a £2billion helicopter contract for the UK. Things begin badly when he accidentally shoots an Ibex, the national animal of Tasbekistan, whilst on a hunting trip with the president. Then affairs are further jeopardized when an arrogant young British human rights activist is arrested by the regime on trumped up charges. This throws Davis into direct conflict with the deputy head of mission, Neil Tilly, who believes Britain should be prioritising human rights over winning arms contracts. Neil, though, has ethical troubles of his own when the Tazbek secret police blackmail him into spying on the British for them.
The embassy is hosting a 'Best of British Festival', offering an opportunity for Davis to impress the Tazbeks and persuade them to go with the British helicopters. However, the best the festival can offer is a medieval folk group from Gloucestershire, a demonstration of how to make a pork pie and a one man production of Frankenstein. Nobody, least of all Davis, is feeling too confident. News reaches them that the human rights activist is facing the death penalty and the ambassador and his team are forced to make a tough decision.