Betrayed by Mykl, the man she loves, Amelia sees the message in the stars, confirming the impending cataclysm. Having located Sundoor, the girls, with Maddy and Lucy and a small group of friends, are chased across the Sahara Desert by ruthless mercenaries. Outnumbered, out of supplies and also up against a local tribe of Arabs; 'The Gatekeepers'; the three girls must solve deadly riddles of the 'labarynth'; the 'gateway' to Sundoor, and face Ryxyl herself.