In the snowy Giant Mountains at the end of the German occupation, a group of child heroes rescue a downed French pilot. Their actions resemble the principle of the well-known 'telephone game' – the pilot is passed between mountain villages like a secret message – secret delivery – at school. But the children play a highly risky game. They are confronted by deadly soldiers of the occupying army, they must outwit traitors and informers and, last but not least, survive in the harsh conditions of winter in the mountains.

Princess Stella wakes up every day in a different form. She has one week left until her eighteenth birthday, and if she cannot be cured of this strange illness, she will continue to transform throughout her life.