The Clan live in a strange undersea world, amid a cluster of nets and metal objects anchored to the root system of a giant plant. This is the Home and outside it lie the hazards of the deep - especially the voracious and many tentacled Horra. Their dead are cast out to sink slowly into the depths where the mysterious deity Ka is waiting. Now their environment is slowly changing. A new current is growing daily stronger and flowing downwards, drawing everything down towards the realm of Ka.