THE SHOWDOWN AT MOUNT CHENGLUNG - PART 2  (SCI-FI) The Leviathan story is centered around a hidden city called Leviathan that lies deep within the dark trenches of the Pacific Ocean. The city is home to a community of immortals that sought to create a utopia over 1,000 years ago. For millennia, they lived in peace and secrecy, gently influencing world events to aid the advancement of mankind. But a terrible secret has been kept deep within the catacombs of Leviathan that threatens the existence of the immortals, and quite possibly the entire world. The Leviathan Chronicles