The planet's largest oil companies were among the first to detect global warming. Unsurprisingly, instead of taking action, they launched a campaign which, for thirty years, has derailed the fight against climate change. A shocking investigation uncovers what was done to impede the battle against climate change, and who was behind it. Company scientists were fired, public perception was manipulated – as the scale and urgency of the climate crisis is becoming undeniably clear, the impact that these actions may have had on the race to save the planet are more shocking than ever.