Flying squirrel Henry is the hero among the mouse inhabitants of Castle Sparklestone. After all, he saved their home. But the stories of Henry’s heroic deeds are getting a bit boring after a while: a new adventure is needed! The very next morning, Henry sets off on his search and comes across a sparkling forest lake with an island at its centre. Maybe it’s a treasure island? But then Henry gets stranded, and he realises how lonely such an island can be. Until he suddenly hears a strange voice, talking in retty cool rap verses – and the lizard Wasabi appears. Well, if the next adventure isn’t about to begin!