在網路誕生前，大自然早已自成一個互聯網絡。現在，科學家終於開始解開遷徙動物如何依靠全球生態系統生存的秘密。本節目記錄了全球多項研究項目，揭示動物的旅程如何為我們預警地震與火山爆發、預測流行病傳播，並帶領我們重新認識彼此共享的地球。

Long before the internet, nature developed its own connected network. Today, scientists are finally uncovering how migratory animals read global ecosystems to survive. Following research teams worldwide, this documentary reveals how animal behaviour can warn us of natural disasters, predict the spread of pandemics, and help us better understand our changing planet.