Toad Is the Uncle of Heaven: A Vietnamese Folktale retold by Jeanne M. Lee [in What Do I Read Next? Multicultural Literature]
During a drought, the Toad decides to ask the King of Heaven for rain. On his journey, he is joined by the Bees, the Rooster, and the Tiger. When they reach heaven, the King tries to get rid of the Toad. But with the help of his friends, the diligent Toad convinces the King to provide rain.