At the Institute, they breed people like livestock. One powerful doctor decides which children get to grow up, and which will die. Losers are dumped in the savage slum outside Institute walls. Those kids never come back. Sixteen-year-old Michelle is a perfect specimen, destined for a luxurious life as a breeder. When her brother and her boyfriend are both mysteriously culled from the breeding program, she jumps the wall to find them. Alone in the ghetto, she's in trouble until handsome, streetwise Dillon stakes a claim to her. She's mortified by her attraction to a Normal.

But the doctor is using the missing boys in a twisted experiment, and she needs Dillon's help to stop him. Michelle must rescue the boys, but a plague is spreading, the doctor is after her, and Dillon isn't thrilled to help find her lost boyfriend.