A young filmmaker living in Boston's Italian district, the North End, wants to make a film about the neighborhood. He needs the blessing of a local celebrity, famous for playing gangsters in movies.

Rogue Vietnam War vets led by their old commander Sloan try to steal some diamonds, but mysterious Megan Marlow steals them first. Sloan sends his men after her, but rogue cop Jack Cates, who's partner was murdered by Sloan, helps her.