John Wick: Chapter 4

In New York City, John Wick, hiding underground with the Bowery King, recovers after being shot off the roof of the Continental Hotel by Winston. Seeking to exact vengeance against the High Table, he travels to Morocco and kills the Elder, the "one who sits above the Table". In response, the High Table sends the Marquis Vincent Bisset de Gramont with unlimited resources to kill John.
In New York, the Marquis summons Winston and his concierge Charon, and chastises Winston for previously failing to kill John. As punishment, the Marquis strips Winston of his managerial duties, declares him "excommunicado", destroys the New York Continental, and executes Charon. The Marquis then enlists John's old friend, Caine – a blind, retired High Table assassin – to kill him, forcing Caine to comply by threatening to murder his daughter.
John seeks refuge at the Osaka Continental, operated by his friend Shimazu Koji. Caine and Chidi, the Marquis' second-in-command, arrive with High Table enforcers to investigate. Koji's daughter, Akira, evacuates the hotel before the High Table "deconsecrates" it, instigating a melee. John battles many armored personnel, culminating in a showdown with Caine. A "Tracker" named Mr. Nobody interrupts their fight, letting John escape after deeming the bounty on him insufficient. A wounded Koji attacks Caine on John's behalf until Caine reluctantly kills him. Caine spares Akira.
John returns to New York and meets a vengeful Winston at Charon's gravesite. Winston suggests invoking an old High Table tradition to challenge the Marquis to a duel. Winning would free John from obligations to the High Table, but he can only request a duel on behalf of a crime family. John travels to the Berlin headquarters of the Ruska Roma crime syndicate to seek readmission. His adoptive sister, Katia, requires that he kill Killa Harkan, a High Table member the Marquis paid to murder her father. Katia tasks her henchman Klaus Shields to escort John to Harkan's nightclub. At the nightclub, Killa ambushes John after a game of poker, but with help from Caine and Mr. Nobody, John kills him and regains his status. Winston conveys John's challenge to the Marquis, acting as his "second". Winston requests that, if John wins, Winston's own "excommunicado" will be revoked, and he will be reinstated as manager of a New York Continental rebuilt by the High Table. However, if John loses, Winston would also die.
In Paris, John and the Marquis finalize the duel's terms – dueling pistols at sunrise at Sacré-Cœur – under the Harbinger's moderation. The Marquis chooses a reluctant Caine to duel John as his proxy, while the Harbinger warns that John and Winston will be executed if either is late. The Bowery King arrives in Paris to give John a pistol and a ballistic suit. The Marquis sets a $25 million bounty on John to delay him. John fights off numerous assassins, unknowingly helped by Mr. Nobody, who forces the Marquis to increase the bounty to $40 million so he can claim it for himself. However, Mr. Nobody ultimately ceases his pursuit when John saves Mr. Nobody's dog from Chidi.
After Caine, Mr. Nobody, and Mr. Nobody's dog assist John in fighting off dozens of assassins – including Chidi, whom Mr. Nobody kills – on the Rue Foyatier, they reach the summit on time. John and Caine wound each other through two rounds of dueling, and the third round comes to a halt when Caine seriously wounds John. Demanding the right to administer the coup de grâce, the Marquis eagerly swaps places with Caine. Winston chides the Marquis for his arrogance, revealing that John had not fired his third bullet. John promptly executes the Marquis with a headshot, ending the duel. The Harbinger grants John and Caine (as well as his daughter) their freedom from the High Table and reinstates Winston as the Hotel Manager of the New York Continental. John reflects upon his life and marriage before collapsing from his injuries. Sometime later, back in New York, Winston and the Bowery King bid farewell to John at a gravestone with his name, located next to one for his wife Helen.
Caine returns to Paris in the final scene after the credits to reunite with his daughter, but is approached by a vengeful, knife-wielding Akira.