Magmell, the world’s only deep-sea aquarium, offers a window into the most remote and mysterious ecosystem on the planet — the deep sea. Here, anyone may come to satisfy their curiosity and learn all about the extraordinary critters who call these depths home. And following his promotion to assistant caretaker, Kotaro gets to call these depths home too. But a new role means new challenges. So, whether it’s football fish who refuses to eat, a flapjack octopus on the brink of death, or the rescue of a wild pacific sleeper shark who can’t get home, Kotaro will have to give it everything he’s got to avoid being swallowed up by the very depths he loves.