The story is told in the form of letters written by Grandfather to a grandchild. In these letters, he gives an account of his trek to the arctic, accompanied by his dog, Roo, to find polar bears. He is worried that polar bears may disappear, because the polar ice caps are melting. Whatever you think about this environmental issue, the story is enjoyable. Grandfather and Roo meet a few interesting characters along the way, such as a sea captain, a sculptor of snow, and wolves who drink too much "old sock." Roo, who apparently talks, though not directly to the reader, is very funny. She reminds me of small children at times. For example, she begs to accompany Grandfather, because, "her particular breed were in fact better than huskies but...no one had ever given them the chance to prove it." After a day or so in the North Sea, Roo thinks that, "it isn't snow that her particular breed are good on, it is sand." The illustrations are very sweet, and appear on almost every page. My 10 year old enjoyed reading it himself, and my 8 and 5 year old enjoyed hearing it read aloud. We were all delighted to find that there are more Grandfather and Roo adventures to read about.