On a century-old island, there is a travel photographer girl who explores her personal family history, a young diver who adventures under the sea, an eighty-year-old Taiwanese who is terminally ill and has confused memory, and the proprietress of a B&B whose ancestor is a sea sacrifice girl... In East Fujian's Sharman Island, there is a black and white photo of Mazu, a piece of clothing in the deep sea, a pearl diver's nightmare. Tourists come and go, the fog disappears and appears, looking for answers to the mystery in the fireworks in the market.
The focus behind the camera, the pursuit under the sea, the nostalgia in the story, and the watch on the fishing boat - combine to form the life memories of four generations of people on Merman Island. Running away in order to return, pursuing in order to recast, salvaging in order to confirm - we have never really been separated.
The separation will eventually return, and the deep sea will have its own echo.
