Celebrity chef Jamie Oliver is back with another healthy eating venture in this travelogue series. This time Oliver explores the link between healthy diets and long lives, as he travels some of the healthiest regions in the world, where there are more centenarians than anywhere in the world. Jamie meets people from various cultures and backgrounds in order to find out what secret ingredients they are using in their meals. The chef also cooks meals based on new recipes inspired by the superfoods he learns about during his journey.