In the year 2555: After civilization has collapsed due to a nuclear catastrophe, the return of the radioactive supercloud threatens to turn even the last remnants of humanity into radiation zombies. The last hope rests on Renard, the visitor, a man who can travel through time. He goes back in time to find young Alice, whose father is building the power plant that will be responsible for the apocalypse. On his journey, however, he is pursued by hunters from the Timekeeper Brigade, who want to prevent any change in the course of time ...