For the first time on TV nature's odyssey unfolds its tales over 4 seasons covering all corners of the French territory. Discover the subtle mechanisms that regulate the great clock of nature. A journey from the infinitely small to the infinitely huge. Each ecosystem is the natural stage on which the thousand and one tales of biodiversity are played out. An incredible range of interactions between species narrated in all their dramatic, playful and unusual dimensions, where survival is the keyword.