Childhood obesity has become a global crisis affecting over 400 million children. Yet many remain unaware of this emergency, and even fewer want to talk about it. This international investigation travels across Europe and the United States to expose the roots of the crisis, while conducting a shocking social experiment that reveals society's dangerous ignorance about what's really fuelling this epidemic. NBA-star-turned-food-activist Pau Gasol joins forces with the world's leading experts on nutrition and child health to tackle this overlooked pandemic.