Strike Back legend John Porter and ex-SAS anti-hero John Bald join forces to take on their deadliest enemy yet: the Russian war machine.

The Kremlin does not forget. Six years ago, high-ranking Russian foreign intelligence officer Nikolai Volkov fled the country, accused of selling state secrets to MI6. Defecting to the UK, Volkov went into hiding.

The Kremlin does not forgive. Nine weeks ago, Volkov was found slumped on a park bench in Swindon, poisoned with a lethal nerve agent - the victim of a botched assassination attempt.

The Kremlin will always find you. Now Volkov is missing, kidnapped from a remote safe house by a Russian snatch squad. With nowhere to run, Volkov faces the ultimate choice: work with his sworn enemies, or face the wrath of the motherland...

Meanwhile, ex-Regiment heroes Porter and Bald are drafted in by MI6 for a highly-sensitive mission. Their target: Derek Lansbury, an eccentric British populist and suspected Moscow agent. Six believes that Lansbury is planning something big ahead of a secretive far-right gathering - and they want Bald and Porter to help bring him down. Going undercover as bodyguards, they must infiltrate Lansbury's inner circle, win his trust and gather vital evidence. But as they get closer to the truth, Bald and Porter find themselves caught up in a terrifying conspiracy: one that threatens to bring down the established order of the West.

And only Porter and Bald, two battle-hardened Blades, stand between survival and global chaos...