An unexpectedly funny and understandably provocative science fiction novel is set in the not-too-distant future when a virus has rendered everyone infertile after young adulthood. Teen girls are now encouraged to get pregnant. Identical twins Melody and Harmony were given up for adoption at birth (prior to the virus). Harmony grew up in a conservative religious community where girls are expected to marry at thirteen and quickly become mothers. Melody was raised in Princeton, N.J., by high-achieving college professors who expect great things from their daughter ... on the reproductive front. They’ve engaged a high-power agent who has matched Melody with a couple wanting a baby. Melody is anxiously waiting for the couple to choose a male for her to “bump” with. Meanwhile, Harmony has arrived on her doorstep. Harmony says she wants to help her sister reject the path she’s on and find God. In truth, it’s clear both teens are struggling with the expectations of their families and societies. Alternating between Melody’s and Harmony’s distinctively delightful points of view, Megan McCafferty’s novel sheds light on our present-day cultural fascination with “baby bumps” and celebrity (when Melody’s match is finally chosen, it turns out he’s the most famous sperm donor in the country) while challenging readers to think about issues of free will, privacy, peer pressure, feminism (pretty much nonexistent in this future) and how cultural norms are shaped and can shift. The abrupt final chapter hints at a sequel in the works. (Age 13 and older)

When a virus makes everyone over the age of eighteen infertile, would-be parents pay teen girls to conceive and give birth to their children, making teens the most prized members of society. Girls sport fake baby bumps and the school cafeteria stocks folic-acid-infused food.

Sixteen-year-old identical twins Melody and Harmony were separated at birth and have never met until the day Harmony shows up on Melody’s doorstep. Up to now, the twins have followed completely opposite paths. Melody has scored an enviable conception contract with a couple called the Jaydens. While they are searching for the perfect partner for Melody to bump with, she is fighting her attraction to her best friend, Zen, who is way too short for the job.

Harmony has spent her whole life in Goodside, a religious community, preparing to be a wife and mother. She believes her calling is to convince Melody that pregging for profit is a sin. But Harmony has secrets of her own that she is running from.

When Melody is finally matched with the world-famous, genetically flawless Jondoe, both girls’ lives are changed forever. A case of mistaken identity takes them on a journey neither could have ever imagined, one that makes Melody and Harmony realize they have so much more than just DNA in common.

From New York Times bestselling author Megan McCafferty comes a strikingly original look at friendship, love, and sisterhood—in a future that is eerily believable.