Seventeen-year-old Rose Levenson has a decision to make: Does she want to know how she's going to die? Because when Rose turns eighteen, she can take the test that tells her if she carries the genetic mutation for Huntington's disease, the degenerative condition that is slowly killing her mother.

With a fifty-fifty shot at inheriting her family's genetic curse, Rose is skeptical about pursuing anything that presumes she'll live to be a healthy adult-including her dream career in ballet and the possibility of falling in love. But when she meets a boy from a similarly flawed genetic pool and gets an audition for a dance scholarship across the country, Rose begins to question her carefully laid rules.