Join Ackerley the Acanthostega and travel back in time 4,500 million years to the Precambrian period, when our planet first formed. Witness the appearance of the very first organisms in the Devonian, Carboniferous, and Permian periods. Watch new forms of life emerge as warm seas allow fish to thrive and plants blossom to give food and shelter to flying and scurrying insects. Discover the facts, fossils, and fun science behind the birth of our planet, including early life forms, giant insects, and early land-based animals. This first part of the exciting story of life on Earth unfolds through amazing lifelike illustrations and fascinating diagrams, all narrated by a friendly prehistoric guide.