Three friends - Julie, Mette and Naisha - are enjoying the first snow in the village. They have snowball fights with the boys and look forward to Christmas. One day Naisha suddenly disappears. With a secret address written in invisible ink as their only clue, they sneak onto the night train to the city. They need to find Naisha before the police do.

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.