Experiment 13 is a young girl. She was abandoned by her birth parents and raised in a laboratory by three scientists. The scientists tell her not to get attached to those around her. They teach her how to lie. They use the girl as their experiment, under the supervision of an unknown man who will do anything to keep it a secret. During the experiment, Thirteen makes friends and enemies, falls in love and dies. All more than once. She is desperate to find out the truth about the experiment, her past, and herself.