The REVOLUTION malware is causing robots across London to attack humans, and Alex and Freddy are caught between their human friends and family, and the desire to help robots like themselves! But who could be behind this nefarious scheme? Before they know what's happening - everything changes. An old enemy, long-since believed dead, suddenly reappears, and uses his evil powers to take over Freddy's robotic systems - and sends him to destroy London! Can Alex stop his brother - and save him from the corrupting evil power of the villainous Robot 23?