In 1983 Wangchao Bay, Song Changhai wakes up from a gambler's mess, his past life's soldier memories awakening. Catching seafood and salvaging goods, he pays off an eight-hundred debt in three days, tracing along the way the truth behind his father's gambler stigma—the sinking of the Chaosheng ship thirty years ago, the thirty-seven-person list, and the mystery of the "thirty-eighth". From three catties of green crabs for thirty yuan to the cooperative, from personal redemption to seeking justice for thirty-seven households, he uncovers step by step the secrets of the North Reef seabed.