As kids books go, this is a pretty good book. It is for the early beginning reader. The print is large enough and the pictures take up about 85% of the page. No real story here. Just a cast of characters that are described as "The Pirates who don't do anything."
They are bored with not doing anything and so they want to do something. Then they dream about what they want to do and this is too tiring so they go back to doing nothing.
About the only objectionable thing about this book, and it should come as no surprise is that this book is bent on Christianity. If you are familiar with Veggietales, you will already know that they inject Christianity and religion into every story. So there is reference to God and there is a Bible Verse. If this is your thing, then there should be no conflict at all.