Nine years earlier, Survival City 5 emerged from the ocean depths and invaded the magical forests of the Rift. Now, expecting her second child, Witch Queen Caia Esvane tries to reunite a divided society. Whilst survivors from City 5 struggle to adapt to a new way of life, a second, more deadly survival city emerges. Unlike City 5, Rax has fully adapted to an undersea existence and all life on land is a threat. Meanwhile, outworlders stranded on the planet since the interplanetary war 17,000 years earlier are seeking a way back to their home world, even if this risks a second invasion from across the galaxy.