'Jack is sick of waiting. Waiting to launch the pirate ship, waiting for his baby sister to be born, and waiting for Mildred's babylings to hatch. But then Captain Clawbeak disappears, and a huge wave sweeps the pirate ship out to sea... with Jack and Joey on it! It's all hands on deck as Jack and Joey try to rescue Clawbeak from a mysterious sea captain and find their way home... before it's too late!' (Publication summary)