The fate of mankind hangs in the balance in this chilla-second novel. Wracked with environmental disaster and a pandemic, humans must decide whether to listen to the Grays, aliens who offer safe harbour on their planet, or the Guardians, who say the Grays are using humans as guinea pigs. In the near future, devastating climate changes, increased seismic activity and a world-wide pandemic force Rosa De Angelo to flee Earth with her three alien hybrid children. In doing so, she leaves behind Tony, her soulmate and husband. Ellen McCarthy is faced with the agonising choice of abandoning her love-starved hybrid children or finding a way back to her human child, Griffin, before it's too late. With Earth's inhabitants faced with seemingly insurmountable illness and destruction, two rival alien species offer them salvation. The United States President Barbara Unger will make the ultimate decision of who to trust: the Grays or the Guardians.