WARNING: The very premise of this film contains spoilers for the series thus far.
Four days have passed since the famed, widely feared assassin John Wick took revenge on a young criminal named Iosef Tarasov and his father, Viggo. The hitman has unfinished business with Viggo’s next of kin, for his prized 1969 Ford Mustang Mach 1 remains in the possession of the crime lord’s brother, Abram. John carves a bloody swath through Abram’s henchman, though he spares him when he is allowed to leave with the vehicle in peace. With his task at last complete, he cements his weapons into the ground once more. However, he is about to learn that retirement is not in his future.
The wife of a man named John Wick has succumbed to a terminal illness. Just before she died, she had given John a gift to help him with the grieving process: a beagle puppy named Daisy. Over the next few days, he bonds with the puppy, driving her around in his vintage 1969 Ford Mustang Mach 1. Trouble brews when at a gas station, a trio of hoodlums led by a young Russian gangster named Iosef Tarasov insists on buying his car. John assures him the car is not for sale, but Iosef refuses to take “no” for an answer. He makes his frustrations known when he and his cohorts follow John to his house, knock him unconscious, kill Daisy, and steal his car.