With their tribe decimated by human cruelty and stranded in the stars, Tenna and Krona labor beneath grief and rage. But so far from home, they can't afford the violence their people could wreak upon what's left of humanity, can't risk losing their only allies. Struggling to cope with what their families did and what they could have done to prevent those travesties, Olivia and Ricardo must finally face the scars of their childhoods...