Starters

Sixteen-year-old Callie lost her parents when the genocide spore wiped out everyone except those who were vaccinated first - the very young and very old. With no grandparents to claim Callie and her little brother, they go on the run, living as squatters, and fighting off unclaimed renegades who would kill for a cookie. Hope comes via Prime Destinations, run by a mysterious figure known only as The Old Man. He hires teens to rent their bodies to seniors, known as enders, who get to be young again.

Someone is after Starters like Callie and Michael - teens with chips in their brains. They want to experiment on anyone left over from Prime Destinations - Starters who can be controlled and manipulated. With the body bank destroyed, Callie no longer has to rent herself out to creepy Enders. But Enders can still get inside her mind and make her do things she doesn't want to do. Like hurt someone she loves.