Jon-Tom, the Spellsinger, isn't getting any younger. And neither, as Jon-Tom is fond of pointing out, is his otter friend, Mudge. But their not so long in the tooth that they're completely content to laze by a riverbank. Not, that is, while there's still adventurning to be done.

And when a lost chord comes up, clearly wanting Jon-Tom and Mudge to follow it, a little gentle adventuring, with the usual gaggle of spoiled princesses in peril, seems to be on the cards. But the chord leads the intrepid pair into deadly danger and, unless Jon-Tom's magic can overcome the machinations of an evil wizard, there's the real possibility of the world being plunged into discord and chaos...