The clouds drift across the bright blue sky-all except one. Little Cloud trails behind. He is busy changing shapes to become a fluffy sheep, a zooming airplane, and even a clown with a funny hat. Eric Carle's trademark collages will make every reader want to run outside and discover their very own little cloud.

故事的主角是一朵調皮可愛的小云朵，它喜歡變化成各種各樣的形狀，一會變成小羊，一會變成小白兔，一會又變成了飛機，只要是它看到過的東西，它都能變出來。最后，它回到了同伴們的身邊，和大家抱在一起，然后，滴滴答答開始下雨。