
The next evening, the little white door on the map was still glowing. Grandma kissed Tilly’s head. “Don’t be late for supper,” she said.

Tilly climbed from branch to branch, following the map. Near the top, she stopped on a broad branch and looked up. A real white door stood among the highest leaves.

Tilly opened the white door and stepped onto a soft cloud path. It bounced gently beneath her paws. Far off, big clouds smiled as they sent rain down to the meadow.

On the smallest cloud sat a little cloud named Puff. “I’m too small,” said Puff. “I can only make a tiny drizzle. The big clouds told me to stay home.” Tilly sat down beside Puff and listened.

Tilly knelt safely back from the cloud’s edge and peered down. One flower in Grandma’s garden drooped. The big clouds had missed it. Tilly pointed. “That flower needs a tiny drizzle. It needs you.”

Tilly climbed onto Puff and held on with both paws. Puff floated gently down toward Grandma’s garden. Tilly stayed safe on Puff’s soft back as the flower grew closer.

Above the flower, Puff gave a tiny sprinkle. The flower lifted its head. In the sunshine, a little rainbow appeared. Puff’s face brightened. “You did it,” said Tilly.

Puff glowed with happiness and carried Tilly back up. They rose past the cloud’s edge and floated into Cloud Town together.

Puff gave Tilly a silver raindrop that never dried. Tilly held it up to the light. “A little mouse with a map came here once, long ago,” said Puff. “She liked our rain too.” Tilly wondered who that mouse could be.

“Goodbye, Puff,” Tilly said. She stepped through the white door and began climbing down the oak, holding the silver raindrop close.

Tilly reached home in time for supper. Afterward, she set the silver raindrop beside the humming shell on the map. The orange door began to glow. Grandma and Tilly smiled.

That night, Tilly snuggled beneath her quilt. The map lay on the table, with the shell and the silver raindrop beside it. “Who was that little mouse?” she wondered, and then she fell asleep.