Austin knew the stories of magical creatures as well as anyone. 'Knockers' were grubby trolls that stand about two feet high, they wear old miners boots and tatty waistcoats and live on the pasty crusts that miners leave behind. The 'Pixies' were very different, small and could fit in a mans hand, always busy, thinking themselves better than anyone and enjoyed playing pranks on anyone around. 'No', thought Austin there can't be magical creatures, it was all just tittle tattle... But Austin was about to become a hero and change his mind on many things...

Austin's adventures take him to a magical undersea world. A rescue, a sea serpent and friends including a a 'Knocker' are all in wonder at what they discover.