Out There - Book Four: Earth
by David Gordon
Sami finds Paradise, Arizona, abandoned. Water shortages forced everyone into big cities. She crosses the desert to Phoenix, but KetaNim is already there, paving the way for the invasion. Worse, SimSim's forces are near, and Sami’s father is a hostage. Sami, Alejandro and a gang of kids have only hours. Sami will need everything she has learned to save her father...and avert a global catastrophe.