Phew, it's hot outside! How are Sally and Nick going to stay cool? Cat suggests that they should visit some friends in the Dizzle-dazzle Desert to learn how to keep cool. They learn that some animals are light coloured, some stay out of the sun, and some, like Tommy the coolest toad around, just mooove sloooow. Nick and Sally take their advice, but Cat has an even better idea - run through a sprinkler!