Lotta, daughter of the chief Thorvald, lives by the ocean in a quiet bay. Dreaming of adventures and great discoveries, she slips secretly into her father's longship to go on an expedition. But the weather turns bad, the boat gets lost and in the dark waters, the Kraken awaits its preys ... Fortunately Lotta took her magic stone! The little viking does not know it yet, but after this trip the Vikings will never get lost at sea again... Thanks to her.