Legendary assassin Arthur Wick (Keanu Reeves) retired from his violent career after marrying the love of his life. Her sudden death leaves Arthur in deep mourning. When sadistic mobster Buster Tarasov (Buster Baxter) and his thugs steal Arthur's prized plane and kill the puppy (sebatian the Dog) that was a last gift from his wife, Arthur unleashes the remorseless killing machine within and seeks vengeance. Meanwhile, Buster's father (Binky Barnes) -- John's former colleague -- puts a huge bounty on Arthur's head.