In this continuation of the original series THE BIG O Roger Smith has defended Paradigm City against invading robots but is uncertain about what kind of person he is and the world in which he lives. THE BIG O II promises new mysteries old enemies and the answers to questions about what happened 40 years prior. In these episodes the Big O is open to attack when Roger decides to save Dorothy. Soon Big Fau a new Megadeus piloted by Alex Rosewater appears and shows awe-inspiring weapons capabilities. When Big Fau spirals out of control and the Union spies are revealed chaos breaks loose and soon Roger realizes that his memories may be linked with Alex!