Polar Bears Past Bedtime by Mary Pope Osborne

The tree house transports Jack and Annie to the Arctic, where they meet a seal hunter and a magical polar bear cub. As they face snowstorms and freezing temperatures, they learn how Arctic people survive in harsh conditions. A mysterious ice wizard helps them complete their riddle and teaches them to see with their hearts. The adventure is both magical and educational, showing the beauty and fragility of the polar world. It’s a gentle but exciting story with a message about care and courage.