Sin City screeches to a halt as a massive power outage brings down the light of the strip, locking down the Montecito, while a mysterious hotel guest is shot on the casino floor. In the midst of the blackout, super sleuths Nessa and Delinda attempt to find the casino killer, while a semi-delirious Sam flirts with paranoia as she suspects the murder to be part of an elaborate cover-up. Elsewhere, a trapped Danny and Mary spend the blackout rehashing some old feelings, while a claustrophobic Mike works tirelessly to free Ed and himself from the lockdown surveillance room.

Danny returns from the war, much to the surprise and joy of everybody, particularly Mary. However, he is acting strangely as the memories of the war haunt him. He begins to worry everybody, particularly Ed and Mary. The guys of the casino are also contending with two of the dumbest guys on earth, one of who has a microchip in his arm. The new guy Leo has a thing for Delinda, and Sam and Delinda are at odds as Sam wants to hire out Mystique to a group of rich morticians.

The Montecito hosts a comic book convention. Mary is checking into the Montecito for a while. Sam is after the black book of one of the world's greatest casino hosts, who just died. Monica wants Danny to be less like Ed. Danny is worried about the Montecito and calls somebody behind Monica's back.