Bill is a tugboat.

Mabel is a barge.

Together they go up and down the choppy river.

The other ships are big and vain.

They tease Bill and Mabel.

But one day a kitten falls into the water.

Kerplunk!

Can Bill and Mabel save the day?

Calista Brill is a children's book writer and editor in New York City. She likes to eat Popsicles, solve crossword puzzles, read comic books, and sing very loudly.