Lately, Hamtaro has been having a strange dream. In the dream, a beautiful princess hamster tearfully asks for help. Hamtaro can’t forget about her, even when he’s awake. One winter day, Laura talks to Hamtaro. She tells him that everyone in the family is going to visit her father’s hometown. When Hamtaro tells his friends about it, Maxwell pulls out a Ham-Ham source book. It’s a book on old hamster history.