Mystic Realm in the Sea of Fog

More than 30 years ago, a research vessel disappeared in the South China Sea.

A search team found the expedition leader at sea, but he had gone mad.

Later, a fisherman photographed an ancient city underwater, drawing explorers from around the world like moths to a flame.

Zhang Qianfan's father was among them, but he never returned from the expedition.

Hired to search for his father, Zhang Qianfan set out to sea and unexpectedly came across an ancient mirror.

No one could have imagined that the mirror concealed a terrifying secret...