Savannah Channing. A fourteen-year-old girl with abandonment issues. Rikka Hamada, a thirteen year old girl who wants nothing more then to see her older sister again. Lyla Blessing, a seventeen-year-old who wants her parents to be proud of her. And let's not forget Aiko Hasagaws, a sixteen-year-old who just wants to be left alone What do these four girls have in common? They're all working under The Serenity Rule.