Pick Your Planet

Young Lex Simms is half-Martian. His family has inherited the remarkable Martian abilities of changing shape and traveling in spirit form through time and space.
True Martians are ugly reptiles who survive on water. However, the only water on Mars has become briny and is almost undrinkable. Decades ago, Preemo (the Martian leader) learned that humans can produce water out of thin air. He sent five males and one female to Earth to breed with humans. Their offspring would terraform a small area on Mars where his family could stay alive. It was, of course, a long-term plan.
But then a comet wrecks the time-scale. Instead of fifteen years, Lex now has fifteen months at the outside.
Lex risks his life to bring the remaining Martians to Earth, only to have a violent storm nearly kill them. The older reptiles plead with him to take them back to Mars where they had expected to die of thirst anyway. The younger ones, however, want to stay here and learn how to become human.
Meanwhile, arch-enemy Fi detects their presence and - oh boy - is he mad! In an agreement made eons ago, Earth belongs to Fi. He vows to torture any non-Earthling he finds on his planet. Now Lex and Melissa, Scott and Peter must hide their peculiar relatives where humans can't see them and Fi cannot reach them.
The Martians must choose whether to return to Mars and take a chance on what effect the comet will have, or face Fi's terrible anger if they decide to stay. Either way, their future looks grim.