The Nektons find the Dark Orca pirate submarine is stopped, dead in the middle of the ocean. Entering it, they discover it's completely deserted. It's as if the pirate crew have just abandoned it. But why? As they explore further, the Nektons are spooked somewhat by mysterious, ghostly sounds. They find Hammerhead and his children hiding deep within the ship, terrified by the "ghosts" they insist have overrun their home. Ant discovers that super-eel larvae are growing within the machinery of the sub, making it do strange things. And when a Giant Super-Eel mother comes looking for its children, the Nektons need to find a way to get rid of those larvae - now.