serves as the game's primary setting In 2012,
Chicago becomes the first city in the world to implement ctOS (Central Operating System) – a computing network connecting every device together into a single system, developed by technology company Blume. While conducting an electronic heist at the Merlaut Hotel, hacker
Aiden Pearce and his mentor and partner, Damien Brenks, trigger a silent alarm set by another hacker. Damien tries to find the hacker, giving himself and Aiden away. Fearing for his family, Aiden drives them to safety in the guise of a surprise trip to the country. On the way, hitman Maurice Vega attacks them, resulting in a car crash that kills Aiden's six-year-old niece Lena. A year later, Aiden tracks down Vega at a baseball stadium, but is unsuccessful in learning the identity of his
contractor. Leaving Vega in the hands of his partner, hired
fixer Jordi Chin, Aiden visits his sister Nicole and nephew Jackson for the latter's birthday, but learns someone is harassing them. With the help of Clara Lille, a member of the hacking syndicate DedSec, Aiden tracks down the harasser, revealed to be Damien, who wanted to get Aiden's attention so that he will help him find the other hacker from the Merlaut job. Aiden refuses but, after dealing with a witness from the stadium, he learns that Damien kidnapped Nicole to force him to comply. Setting up a hideout in the Bunker—an undetectable former Blume base with access to ctOS—Aiden and Clara track down the hacker: gang leader and
Army veteran Delford 'Iraq' Wade. To reach Iraq's servers, Aiden infiltrates a human auction he is attending to copy his access key, and
blackmails his cousin Tyrone "Bedbug" Hayes into acting as his inside man. Bedbug manages to obtain a data sample revealing that Iraq has information on almost every citizen of Chicago, which allows him to protect his gang from the authorities. As the data recovered by Bedbug is encrypted beyond Aiden and Clara's abilities, they decide to track down legendary hacker and former Blume
whistleblower Raymond "T-Bone" Kenney, who caused the
Northeast blackout of 2003 while trying to expose the dangers of ctOS, which he had helped to create. Aiden finds Kenney and agrees to erase his identity from ctOS to allow him to return to Chicago. While infiltrating the Blume headquarters, however, he discovers that Damien gave up Kenney's location in exchange for full access to ctOS. After Aiden protects Kenney from Blume's private security forces, the pair return to Chicago. To finish downloading Iraq's server data, Aiden assaults his gang's compound, and kills Iraq when the latter confronts him. Aiden, Kenney, and Clara are unable to decrypt Iraq's data because another hacker, JB "Defalt" Markowicz, infiltrates their system, steals the data, and deletes it from their servers. Defalt also reveals that Clara was hired to track down Aiden after the Merlaut job, therefore being indirectly responsible for Lena's death, which causes Aiden to angrily dismiss her. Meanwhile, Damien demands to know Aiden's progress, so the latter sets up a meeting where he lies that he has the data Damien wants, and demands Nicole's release. However, Damien calls Aiden's bluff and, in retaliation, exposes his identity to the authorities. After dealing with Defalt and retrieving the stolen data, Aiden tracks down Nicole with Kenney's help and rescues her, allowing her and Jackson to leave Chicago. As Kenney finishes decrypting the data, he informs Aiden of who ordered the hit on him:
Irish Mob boss and Merlaut owner Dermot "Lucky" Quinn. Aiden confronts Quinn, who reveals he ordered the hit because he believed Aiden was searching for secret video footage of Mayor Donovan Rushmore killing Rose Washington, a former Blume engineer who was used by the company and Quinn in a plot to blackmail the mayor. Aiden kills Quinn by hacking his
pacemaker, but learns that the latter sent hitmen after Clara for being a liability. Unable to save Clara, Aiden makes the video of Washington's murder public, enraging Damien, who hoped to use the blackmail material for his own gain. As Damien wreaks havoc in Chicago using ctOS, Aiden shuts down the system using a virus created by Kenney, leading to a massive blackout in Chicago and other cities. He then tracks down Damien and confronts him at a lighthouse, where Jordi also arrives, having been hired to kill both men. Aiden incapacitates Jordi and kills Damien before reflecting on his role as Chicago's protector. Later, Jordi calls Aiden one last time to tell him where Vega is kept; Aiden heads there and decides his fate.
Bad Blood In 2014, one year after the main events of
Watch Dogs, Kenney decides to leave Chicago after performing what he thinks is his last hacking job: removing more data about him from the Blume servers and planting a fake trail to lead Blume away from him. However, after rescuing his former colleague Tobias Frewer from several fixers who had kidnapped him, Kenney elects to stay in the city until he learns who is out to get him and Frewer. The pair investigate the fixers trying to capture them and eventually discover that they were hired by Defalt, who is working with Blume to exact revenge on Kenney. Kenney manages to track down Defalt, but while searching one of his hideouts, he finds mannequins representing the people who died during the blackout Kenney had caused eleven years ago. Among them is a mannequin wearing a replica of Defalt's mask, leading Kenney to realize the true reason for Defalt's vendetta against him: his brother was among the blackout victims. This angers Kenney, who had no intention of harming anyone during the blackout and has been living with the guilt ever since. After fending off fixers sent by Defalt to kill them, Kenney and Frewer infiltrate his hideout, where they are separated when Kenney is trapped in a room by Defalt, who holds a vote to decide his fate. Forced to confront the families of the blackout victims, Kenney apologizes for his actions and admits that he may be deserving of death, but warns the audience that, if they vote to kill him, they too will have to live with the guilt of taking someone's life. Kenney's speech ultimately fails to make the majority of the audience change their minds, and they vote in favor of his execution. As Defalt releases gas into the room, Kenney begins to
asphyxiate but manages to hack the building's ventilation system through Frewer's phone, rerouting the gas to Defalt's room and seemingly killing him. Frewer rescues Kenney and the two decide to stay in Chicago for the time being, hoping to recruit Aiden to help them fight against Blume. ==Development==