According to the legend, long ago the mighty Mountain Troll ruled the Nordics and spread chaos. Together, the four peoples, the goblins, the fairies, the witches and the humans managed to put him to sleep with the help of a magical amber. But one day a human happens to find the stone and breaks the magic that keeps the troll asleep. Twelve-year-olds Saga and Love, a human and a troll, team up to stop the Mountain Troll from waking up and taking over the world again. But will they manage to find the stone in time and save the world?