It is holiday camp and the kids go on trip to a Viking island with Siggi and his family. The island is famous to host a wandering ghost, although nobody has confirmed it. During an excursion, Fred finds a beautiful piece of amber ¿ an ancient Viking figurine! But the next morning, the figurine disappears! Lindy, Siggi's daughter, points at the ghost as culprit, while Charly says phantoms do not exist¿ Charly and Lindi lead different investigation lines and only one of them proves to be true.