In the third book of the Nivian King series, our heroes race against Zorath to retrieve the Arvinstrum.

The land of Seranor aches and moans as young Khan deciphers the riddle of Pyxa. Ira gives Khan and his crew a new mission to retrieve the last two pieces of the Arvinstrum, a 7-piece creation instrument. The Nivian Zorath already has acquired five pieces and now seeks the last two in order to harvest Seranor's very life.