Callie is trying to survive as an unclaimed minor with her young brother, Tyler, in a world where everyone but the very young and very old have died of a virus. Callie is squatting in an apartment building, so when she finds out she can make a lot of money at Prime Destinations, "renting" her body to "Enders" (older adults) who want to be able to live in a young body for a while, she leaves Tyler in the care of Michael and turns herself over to Prime. They give her a laser makeover so is is gorgeous, and rent her out for a day. Eventually, she is rented to Helena, but things start to go wrong-- she wakes up while posing as Helena and can hear her voice in her head. It turns out that Prime is not just taking unclaimed minors-- Helena's granddaughter joined Prime in order to get the makeover, and died. Helena is bound and determined to kill the owner of the business, so Callie tries to uncover what is going on. When Prime announces a new program for Enders to buy bodies instead of just simply renting them, Callie realizes that something must be done. Can she manage to take down prime but survive to take care of her brother?
VERY nice twist in a dystopian novel. The science in the body switching seems plausible, and the construction of a post apocalyptic society is good. Callie grows as a character, the plot advances logically, and the conclusion is final enough for a single volume but leaves room for a sequel. Appropriate for middle school. My daughter loved the cover.