Jupiter Jones was born under a night sky, with signs predicting that she was destined for great things. Now grown Jupiter dreams of the stars, but wakes up to the cold reality of a job cleaning other people's houses and an endless run of bad breaks. Only when Caine, a genetically engineered ex-military hunter, arrives on Earth to track her down does Jupiter begin to glimpse the fate that has been waiting for her all along - her genetic signature marks her as the next in line for an extraordinary inheritance that could alter the balance of the cosmos.