Wake up the bear with eight legs. Read the memory of the world. Collect the most valuable treasure of India. And you will unravel the mystery of our planet." To solve the riddle, Tobi sets off on the most adventurous journey of his life. It takes him to the mouth of a bubbling volcano in the middle of the Pacific, deep into the underwater world of Tasmania, through the icy desert of Greenland and into the urban jungle of Mumbai. He accompanies scientists who are researching our past in order to solve the problems of the future. He meets people whose homeland is under threat. He discovers extraordinary animals: sea dragons! And bears that can survive for decades without water and even in space. Only when the monsoon transforms the city does he realise what makes our planet so unique. And that he had the secret of our earth in mind the whole time.