The city of Tokyo has been overthown, taken over by invaders who have devastated the rest of the planet. For 15 years, the remants of the human race have fought a losing battle against the Mu knowing that there key to victory lies in within the domed walls of Tokyo Jupiter, where time flows in a different path and none of the mind-wiped citizens even know that the city has been conquered. But no one has been able to get into Tokyo, Until now. Prepare for the ultimate paradigm shift as one young man learns the horrifiing secret in RahXephon.