Octopus

At the very bottom of the Pacific Ocean hides an octopus city. Rina Kouravina and her partner enter the underwater caves and are captured by intelligent sea inhabitants. Now, to escape, they must prove that humans are not the demons that hunt and eat octopuses, but harmless marine animals. Will they manage it, or will they have to flood the old city with blood? After all, its inhabitants aren’t inclined to believe outsiders—but if fighting is inevitable, the divers are ready to break through the tentacles of an ancient race.