Can you imagine, suddenly living in the past? Not last year or in the Roman Empire, but a really, really long time ago? During a school outing, three clever students of the 'Pemberton Academy' Katherine, Trevor and Chryséis find a time portal and go on the journey of their lives. 12,000 years in the past, things must have been very different, right? They want to deliver a physics project never seen before and jump into a fascinating new world of adventure, where they encounter an astonishing lost civilization, meet another time traveller and learn that they might change the future for the better. But should they really explore this strange world and who are the 'Children of the Moon'? After a dangerous turn of events, the three time travellers wonder if their trip wasn't a big mistake after all...