What bad luck! During a class trip to the Stone Age Museum, Adam bumps into a display case. An ancient bone flute now lies in two pieces. To ease his guilty conscience, he wants to travel back to the Stone Age with his two friends, Tinka and Niko, to find a replacement for the flute. As soon as they arrive in the Stone Age, the ground shakes – a mammoth with a baby is approaching. But how can that be? The friends had actually planned to travel to the Neolithic period – completely without mammoths and saber-toothed tigers. Something must have gone wrong. The Stone Age boy Galdir helps the three of them find their way. They discover what Stone Age chewing gum is all about, why there were cave paintings, and how people lived. They even manage to get a flute. So it's back to the present quickly – and there's already another surprise waiting. Excitement until the end. A captivating adventure set against an astonishing backdrop for children aged 8 and up.