'David was the captain of the airship Investigator, and had so been for 5 years. Over that time, David had learnt a lot about being a captain of a ship. He learnt to respect his crew, as that would improve their quality of work and decrease the chance of mutiny. He learnt how to estimate distances by eyesight, a skill that has come in handy more than once. And today, he learnt something extremely important: when making a deal with the Sharpwind Pirates, always keep your side of the deal.' Follow David and his crew Alex, Mike and Mitch of the airship Investigator as they travel through many lands, go on grand adventures, battle menacing enemies, and all in all have a bloody good time.