Former
MI6 "Black Kite" assassin Michael Mason lives on an island in the
Scottish Outer Hebrides. Every week, he receives supplies from Jessie, a young girl grieving the loss of her mother, and her uncle, who Mason served with in the
Royal Marines. However, Jessie grows frustrated by Mason's lack of respect and reclusiveness. When a storm kills her uncle and injures Jessie, Mason rescues her. They bond by playing
chess as she recovers on the island. Stephen Manafort, the
Chief of MI6 and Mason's former handler, is questioned in a
public inquiry about Total Human Engagement Analytics (THEA), an advanced
surveillance program being investigated for illegal monitoring of British citizens. Prime Minister Fordham, who supports THEA, arranges for Manafort to be replaced by his deputy, Roberta Frost, so he can conduct
black-ops outside of MI6. Mason is captured on camera buying supplies in
Stornoway, but THEA identifies him as terrorist Timur Tchermoev, subject to a kill order. This prompts Frost to dispatch a tactical team, but Mason kills them using various
booby traps. Frost discovers Mason's true identity, and that he has been in hiding for betraying Manafort after refusing to kill an
Iranian nuclear program defector ten years prior. Mason and Jessie escape to mainland Scotland, but are attacked by James Workman, another "Black Kite" taking orders solely from Manafort to tie up loose ends. They escape him after a lengthy car chase and fight with local police. Mason takes Jessie to his friend Arthur Booth, a former MI6
systems architect that created THEA. Booth, suffering from
cancer, is unable to take Jessie, and is shocked when Mason suggests going to MI6
informant and
human trafficker Kamal Shah. Workman attacks Booth's house, forcing the three to escape. Mason and Jessie drive to Kamal's nightclub in the
Isle of Dogs,
London, to secure her safe passage. After warning Kamal that Manafort is no longer constrained by MI6 and poses a danger to them both, he agrees to give Jessie a new identity and transport her to
Spain on the condition Mason kills Manafort. Manafort deploys several "Black Kite" operatives to the club before Frost's arrest team arrives, but Mason kills them all, disarms the arrest team and rescues Jessie. After getting her to the boat to Spain, he is ambushed by Workman on the docks. After a brutal close combat fight, Mason overpowers Workman and kills him. Mason confronts Manafort at his private estate, and is berated for breaking the most important rule in Black Kites: loyalty. Michael responds that finding his humanity after a life of obedience is why he is still alive before executing Manafort. Three months later, Roberta wishes to bring Mason in and has Jessie under surveillance. In
Ronda, Jessie sits in a café and receives a chess piece from Mason, who overlooks her briefly from the street before walking away. ==Cast==