Leif is not unlucky. Yes, he does split his trousers at least once a week. And yes, he's always tripping up. But he's determined to be a daring explorer like his father. His first quest is to find a mythical glittering sword - a narwhal tusk - here in Greenland. But can he avoid the grumpy polar bears, some over-friendly great auks and one very chatty puffin? And escape his annoying siblings? He's going to need all the luck he can get!