In a small town plunged into darkness, two children, Kyona and Adriel, are separated from their parents and, facing the path of exile alone, embark on a heroic journey that will take them from childhood to adolescence, in search of refuge, peace and the hope of finding their family.
During hibernation one sleeps and never leaves the warm bed. The little hedgehog initially wants to go on a very short expedition - to see the full moon and come right back - but he is surprised by the first snow. The search for the home where Dad and Mum stayed is not easy and gradually turns into an unexpected adventure.
