After a series of cataclysmic events in which the country becomes divided to survive, Rebecca Flora becomes caught between two worlds. Thrust out of her Old Colony and separated from her beloved father, Rebecca struggles to find acceptance in the alluring and dangerously seductive heart of the Pulse, the New Colony city where she is an outcast. But can she survive the devastating sacrifices she must make for acceptance? As Rebecca discovers that all is not as it seems, she opens her eyes to a much greater evil at work and begins to question her father's involvement. She must find the courage...