Michael Bryce lives a luxurious life as a successful UK-based private bodyguard, until his client Takashi Kurosawa, an international arms dealer, is assassinated on his watch. Two years later, the fallen-from-grace Bryce survives by protecting drug-addicted corporate executives in London.
Meanwhile, Vladislav Dukhovich, the vicious dictator of Belarus, is on trial for crimes against humanity at the International Criminal Court. Unable to secure solid evidence or testimony against him, the prosecution's last hope is incarcerated hitman Darius Kincaid, who agrees to testify against Dukhovich in exchange for the release of his wife Sonia from prison. Led by Interpol Agent Amelia Roussel, an armed convoy escorts Kincaid from the UK to the International Criminal Court in The Hague.
With the aid of treacherous Interpol Assistant Director Jean Foucher, Dukhovich's men successfully ambush the convoy as it passes through Coventry and kill most of the security team. Kincaid eliminates the attackers, and Agent Roussel, the sole survivor, takes Kincaid to an Interpol safehouse in the city. Realizing that the agency can not be entrusted with the mission due to a possible leak, she enlists the help of Bryce, her ex, to escort and protect Kincaid on the way to The Hague.
They hitchhike to a ferry going to Amsterdam, where Sonia is being held. Kincaid reveals to Bryce that he was the one who killed Kurosawa, having spotted him by chance while on another job, causing an outraged Bryce to abandon him. As Bryce evaluates his past mistakes at a beer stand, Dukhovich's men attack Kincaid. Bryce regains his composure and helps Kincaid escape, but is captured in the process. As he's being tortured, Kincaid arrives and rescues Bryce.
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