Every year, 500,000 Europeans are meet a premature fate due to air pollution. One of the main causes of this pollution is coal – a fuel that is still used in many European countries. And this air pollution has no borders – it spreads its contamination throughout the continent, where citizens fight every day for their basic right to breathable air. Many doctors have raised the alarm, but there is a lack of evidence to make real change. Together with scientists and citizens, a team of journalists sets out to search for evidence of air contamination. They will carry out a unique, one-of-a-kind scientific study: comparing the levels of carcinogenic pollutants found in the bodies of European children. Despite the hardships and an arrest by the police, after a year of investigations, their results make the headlines, force a government to act and will draw the attention of the European Parliament. Will the powerful coal lobby resist these revelations?