Babysitting your little brother? What a pain! Especially when your brother is Teeny Tiny Bear, who does whatever he wants. When Pompom Bear finds him by the river, he makes quite a discovery…

This morning, Mama Bear and Papa Bear are getting their den ready for hibernation. Pompom Bear has to look after his little brother. But Teeny Tiny Bear does as he pleases, and Pompom winds up having to chase him through the woods. Where has he gone?! At last, Pompom sees a small fluffy tail behind a tree. But it’s not his brother’s. It’s white, and there are lots of other fluffy white tails too! Pompom discovers a group of polar bears sitting on big, swiftly melting ice cubes. How did they get here?