Chronology
Set in present-day London, a group of radical activists take over an energy company’s annual gala and take 300 hostages to expose the corruption of their hosts. Their righteous cause is hijacked by an extremist of their own rank, who is set to massacre everyone in the building to send a message of anarchy to the world. It falls to a former soldier-turned-window cleaner, played by Ridley, to suspend herself 50 stories from the outside of a building to rescue those trapped inside, including her younger brother.