Living in a world ravaged by a mysterious virus, one that causes gravity to lose its effect on those afflicted, Sadie Cleamont has escaped the outside world for the safety of an isolated city named Ancthia. Alongside her closest friend, Lander Holland, Sadie makes the best of her situation, helping to supplement her mother's income as a street musician. But when Lander reveals a startling discovery regarding the safety of the city, Sadie's world is turned upside down as everything she's been running from gets a little too close for comfort. Trudging through the wreckage of her life, Sadie makes a singular decision that reveals the true origins of the virus, as well as the reason for its devastating side effect.