Nuclear security expert Katja Wernecke Ulrike Folkerts helps cover up a fire in the German nuclear reactor she works in before the government takes a decision on extending the usage license for it But the press uncovers it PR man Steffen Stratmann Matthias Koerbelin is brought in to improve the companies image but before he can implement his plan a nuclear meltdown occurs 2m people have to be evacuated Wernecke reenters the hot zone to investigate the cause