They set out in a massive submarine, the Ulysses and as they approach the entrance to Atlantis, the Ulysses is attacked and destroyed by the Leviathan, a huge robotic guardian of Atlantis.
They set out in a massive submarine. A massive submarine was the Ulysses. The Ulysses is attacked and destroyed by the Leviathan. They approach the entrance to Atlantis. The Leviathan is a huge robotic guardian of Atlantis.