Jenny Linsky, her adopted brothers, Checkers and Edward, and their master are on their way around the world on the good ship Sea Queen. No one could make such a trip without some adventures, and Jenny and her brothers have more than their share of fun and excitement. In one port of call they have their fortunes told by a cat skilled in reading paws. One by one they predictions come true, with extraordinary and wonderful results.

The three cats make many new friends on their trip. The ship's cat, Jack Tar, promises to become a member of the Cat Club when he is at liberty between voyages. But after all the fun and action the three cats are happy to return to their own house and old friends.