"Duck and Hippo may be completely different, but they are best friends. When playful Duck invites careful Hippo to go for a walk in the rain, they have trouble sharing Duck's umbrella. But Duck and Hippo won't let that stop them. Soon they are puddle-jumping and sailing down the river! Until...WHOOOSH! A terrible wind sends the umbrella flying up, up, up into the air, with one friend holding on. What will Duck and Hippo do now?"--Dust jacket flap.