The group of heroes are pulled into another tomb-raiding expedition that takes them beneath the sea. In an ancient Ming Dynasty ship, they encounter monstrous creatures and puzzling traps. Wu Xie opens the box that he obtained from the Seven Star Coffins of Lu Wang's Palace to discover a snake-browed copper fish. Wu San Xing recounts the strange occurrences over ten years ago when they went on an archaeological expedition to Paracel
