Batman: Arkham Knight - Season Pass (2015)

Prologue
Nine months after the |Joker's death, crime rates in Gotham City have dramatically declined, but Batman anticipates a new threat and maintains a vigil over the city. Before his death, the Joker sent his mutated blood to Gotham's hospitals, and several patients were infected. While most were cured, the patients who were not treated are starting to look and act like the Joker. Batman researches a cure for the mutations, and orders Robin to watch over the infected.

The Arkham Knight
On Halloween night, Scarecrow unleashes his newest strain of Fear Gas in a diner, and threatens to release it throughout Gotham. Six million civilians are evacuated, but the city's criminals and supervillains stay behind, leaving Commissioner James Gordon and the Gotham City Police Department outnumbered. Batman investigates Scarecrow's presence, and searches for him in a rooftop safehouse, but instead finds and saves Poison Ivy, who was being held captive by Scarecrow's hench... развернуть