"You're a strong skater, Piet, and you have a quick mind. This is why I know you'll succeed in this important task. I wouldn't ask you to do this if I didn't know it could be done." In 1941 Piet, a young Dutch boy from Sluis, gets the assignment of a lifetime: He must skate along the frozen canals of the Netherlands and across the Belgian border, in order to guide two neighborhood children to their aunt's house in Brugge, where the children will remain for the duration of World War II. Their father has been taken by German soldiers, and the children are no longer safe in Sluis -- but the journey with Piet, past soldiers and enemies, is fraught with danger. Along the treacherous path to Belgium the three children skate using every bit of speed, courage, and strength they can muster.