When Zelia's father dies in a mag crash, plans are made for both Zelia and her sister, Dyl, to go live with a foster family. But before that happens, Dyl is kidnapped
Zelia is fostered by Marka who lives in a very secure building where you must have your blood tested to even enter. When Zelia meets her foster brothers and sisters things get very weird.
This novel is part sci-fi, part adventure/thriller, and part romance, with a dab of some real medical facts in the mix. Zelia has Ondine's Curse, a real, rare medical condition that causes Zelia to forget to breathe. Kang mixes science fiction with medical reality which makes some of the very outlandish things in the book seem almost real.
Zelia is in a race for her sister's life. She must decode Dyl's DNA and found out why she was kidnapped and where she was taken. Because of some drug use and some mature situations, I would recommend this for more mature readers. I think casual readers or younger students would be confused by some of the plot twists and turns in this book.