The London branch of DedSec, led by Sabine Brandt and her pirated and modified AI Bagley, detect armed intruders planting bombs in the Palace of Westminster. Sabine assigns DedSec operative Dalton Wolfe to defuse the bombs. As he attempts to do so, DedSec is attacked by unidentified intruders, similar to those detected in Parliament. As a result, in order to protect DedSec's assets, Sabine is forced to shut down Bagley, forcing Dalton to defuse the bombs without Bagley. Although he is able to defuse the bombs on the roof of Parliament, he quickly discovers that the perpetrators behind the bombings is an anonymous rogue hacker group called Zero Day, and that there are more bombs planted around London. Zero Day's leader kills Dalton on the roof as multiple bombs elsewhere in London are detonated, which kills thousands of people.
