When young Vigfus the Viking and his parents, Thorveld and Helga, accidentally sail their longboat into New York Harbor during Operation Sail, a classic immigrant story begins, and hilarity ensues. Nothing seems quite right when this family of fierce, ill-mannered, and very poorly behaved Vikings finds New York City a little too tame for their liking, and not at all like their old Viking Lands! When Vigfus finds out that pillaging the school bus and capturing the cafeteria monitor is something the natives of this strange island don't do, he soon discovers that he must learn a new culture in order to gain something he's never seen before and the very thing he wants most: a friend.