Hitmen Dave Catania and Frank Webster are dispatched from New York to Milan to find and kill Luca Canali, a small-time pimp accused of stealing a mob heroin shipment.

Don Vito deploys a city-wide network of spies and informants to find Canali, but he manages to narrowly evade them, even as his own friends turn on him.

Enraged, Canali goes on a violent rampage of revenge against the mob, picking off the members of Don Vito's gang and eventually killing the boss himself in his own office.

[1] Various home video releases over the years retitled the film as Hired to Kill, Black Kingpin, Hitmen, and Hit Men.

[1][6] Quentin Tarantino, a self-avowed fan of Di Leo's films,[7] cited the characters of Dave and Frank as the inspirations for Vincent Vega (John Travolta) and Jules Winfield (Samuel L. Jackson) in Pulp Fiction.