(complete cast in order of appearance) Main characters are listed in bold letters In the first episode, Tim Brown-Windsor is being pressganged on to the ship "The Flying Wombat".
This subplot is however soon forgotten, as Tim and his girlfriend Fiona Rabbit-Vacuum (who is disguised as a male cabin-boy, Jim Ladd) join the expedition that Captain Cleese has set out for: to find a jewel called The Green Eye of the Yellow God - the name of the gem is however soon changed into "The Green Eye of the little Yellow Dog".
Despite sabotages from the villain Casey O'Sullivan and his moronic sidekick Masher Wilkins, the ship sails on for several episodes, picking up the recurring ISIRTA characters Grimbling and Lady Constance (introduced here) on the way.
However, as the final twist in chapter 13, the "Eye" is found to belong to a fierce dog that is neither small nor yellow (cowardly), but attacks them.
Lady Constance appears in many later episodes; Tim, Fiona and Grimbling also remained as recurring characters.