Five sisters, and she's their lifeline. Sarah Denning is chosen for a job she didn't ask for. Destined to save her family and their race, she's their last hope in helping them survive. Along her path, she meets a man who can save her but can she still save her family and have the chance at a normal life? Will she be able to forgive her own flesh and blood and start something new? She is their last hope, their lifeline, the last blood.