One night, Yellow Mum Cat leaves her kitten on the dock, in front of a large white ship that should...

One night, Yellow Mum Cat leaves her kitten on the dock, in front of a large white ship that should sail from the port the next day. She wants her son to become a ship cat and see the world, instead of ending up as an ordinary butcher's cat. The next morning, the frightened cat is found by Violet, the captain's daughter, who names him Charlie. This is when his adventures begin.