Pinkie (Sam Riley), a young thug on the rise in the British underground, tries to make his mark on the vicious gangland scene in Brighton. Young, brash, ruthless and cold-hearted, Pinkie is a steely-eyed shark slithering through the underworld.
When Rose (Andrea Riseborough), a young waitress, stumbles on evidence that links Pinkie and his gang to a revenge killing he has committed, Pinkie realizes he has to tie up loose ends. He carefully stalks his new prey in an attempt to discover how much Rose really knows and, ultimately, ensure she won't talk.