The Leviathan is the largest ship ever built - A mile long and half a mile tall and taking ten years to build. She is clearly modelled on The Titanic. Launched in 1928 with some 30,000 passengers and crew it disappeared and has spent the last twenty years lost in some kind of endless and lifeless ocean. There are strange goings on deep in the bowels of the ship which occasionally leaks out on to the upper decks.