An ancient treasure chest is unearthed from the bottom of the sea off the coast of Monte Carlo. The good news is, it’s full of gold bullion. The bad news is, removing the chest from the murky waters has awakened The Leviathan -- the giant sea monster whose job it is to protect the treasure. Martin, Diana and Java are sent in to investigate encounters with the creature by the area’s rich and famous (it has flipped over a yacht, terrified swimmers, etc.). MD&J finally come face to face with the creature and Diana ends up being swallowed whole! Martin (and Java) must, literally, journey into the belly of the beast and save Diana before it’s too late (they also have to return the gold). In a ...