Guy has a dog and had a duel. Many sequels

Super-assassin John Wick returns with a $14 million price tag on his head and an army of bounty-hunting killers on his trail. After killing a member of the shadowy international assassin’s guild, the High Table, John Wick is excommunicado, but the world’s most ruthless hit men and women await his every turn.

John Wick is forced out of retirement by a former associate looking to seize control of a shadowy international assassins’ guild. Bound by a blood oath to aid him, Wick travels to Rome and does battle against some of the world’s most dangerous killers.

The time travellers arrive in Scotland just after the Battle of Culloden. The Second Doctor gains the trust of a small band of fleeing Jacobites by offering to tend to their wounded Laird, Colin McLaren. While Polly and the Laird's daughter, Kirsty, are away fetching water, he and the others are all captured by Redcoat troops commanded by Lieutenant Algernon Ffinch.

A man, adorned with a dog tag reading "Buddy", enters an underground fighting ring against a dog. The two have a vicious fight as various onlookers cheer them on. As the dog bites the man's neck, he shouts "Buddy!", causing the dog to stop. The dog suddenly turns on his handler, and lost dog posters are shown revealing that the dog previously belonged to the man. The dog and the man team up on the handler and presumably kill him.

The dog returns in this short sequel to exact his vengeance.

A man is forced to reconcile with his future, through his interaction with the household dog.