The celebration of the solar eclipse ends abruptly as the cataclysmic event known as The Rupture rips the city apart, causing a volcanic eruption that rains molten lava down upon its citizens. Roden and the twins spring into action! They lead the other children out of the city, but it's nearly impossible to find the exit through all the ash. Their only hope is for Itza'be and the Zen'talli to arrive in time to save them.