A mysterious island has appeared off the coast of Morocco, baffling scientists. Strange sightings, both wondrous and terrifying are cropping up worldwide. Meanwhile, the time travellers are getting along worse than ever, the very fabric of the cosmos is unravelling and the most feared armies of all time have returned to wreak havoc upon the world. To top it all off, Louisa''s first week at school has been a total disaster! To solve this time travel conundrum and save the universe from imploding, Louisa and her friends will travel ten thousand years into the past, where they must find the lost city of Atlantis?and ensure its destruction.