On April 26, 1986, a 1,000 feet high flame rises into the sky of the Ukraine.
The fourth reactor of the Chernobyl nuclear power plant just exploded.
A battle begins in which 500,000 men are engaged throughout the Soviet Union to "liquidate" the radioactivity, build the "sarcophagus" of the damaged reactor and save the world from a second explosion that would have destroyed half of Europe.
Testimonials and unseen footage offer a new perspective on the Chernobyl nuclear disaster of 1986.