After Tiffany is orphaned on the night of her 18th birthday, she discovers, as the sole heir to her parents' estate, she has inherited a frozen embryo from when they did IVF to have her. Feeling lost, alone and longing for a sense of family, Tiffany can't bring herself to destroy or donate the embryo. Instead, she decides to be impregnated with her biological twin. A legal battle ensues over whether the embryo is a person or property and the ethics of whether it is acceptable to give birth to your own sibling. Set in Australia, this contemporary fiction novel is full of emotion, dilemmas and unexpected friendships, as Tiffany forges a new life without her parents.