Climate skepticism takes center stage as this second chapter, subtitled 'Fightback', picks up after the early-1990s consensus that produced the Rio Earth Summit, where George Bush and other world leaders signed on to a shared framework for tackling global warming. That unity does not last. The film tracks the counter-offensive mounted through the decade by skeptics who attack the science from several directions at once: some deny any warming is happening, others accept it but call it natural variation, and a further group concedes the warming but denies humans or greenhouse gases are responsible. Key figures from the skeptic camp appear on camera to lay out their reasoning directly, rather than being paraphrased or dismissed, and the film follows how their arguments shift as the scientific evidence accumulates against them over the years. The result is less a referendum on who is right than a record of how a scientific question got pulled into political and public argument, with the battle lines drawn in the 1990s still shaping the debate today.