The Mysterious Island

Count Dakkar, a kind-hearted ruler and scientist, presides over a volcanic island close to Hetvia, where he has eradicated class distinctions among the locals. Alongside his sister Sonia and her fiancé Nicolai Roget, Dakkar prepares for the maiden voyage of their innovative submarine. However, their plans are disrupted when Baron Falon, the tyrannical ruler of Hetvia, launches an attack. As Falon pursues them in his own submarine, Roget and Dakkar embark on a dive into uncharted waters, uncovering a mysterious world inhabited by dragons, colossal squids, and an astonishing humanoid species.