Prot is a patient at a mental hospital who claims to be from a far away planet. His psychiatrist tries to help him, only to begin to doubt his own explanations.

Some of Sin City's most hard-boiled citizens cross paths with a few of its more reviled inhabitants.

Career criminal Johnny Clay recruits a sharpshooter, a crooked police officer, a bartender and a betting teller named George, among others, for one last job before he goes straight and gets married. But when George tells his restless wife about the scheme to steal millions from the racetrack where he works, she hatches a plot of her own.

Private Investigator Philip Marlowe is hired by wealthy General Sternwood regarding a matter involving his youngest daughter Carmen. Before the complex case is over, Marlowe sees murder, blackmail, deception, and what might be love.

While doing a friend a favor and searching for a runaway teenager, a police detective stumbles upon a bizarre band of criminals about to pull off a bank robbery.