Miss Mary Morstan contacts Sherlock Holmes for his help regarding her father, captain Morstan, who disappeared 10 years ago. Since his disappearance she annually receives a valuable pearl by post from an unknown person. The mystery leads Holmes and doctor Watson into an intricate plot regarding a lost treasure belonging to four convicts on the Andaman Islands。孙雯的母亲曾投身三星堆考古,后离开人世,郝正父亲为做一款三星堆单机游戏突然失联。孙雯因沉迷突然中止的三星堆游戏到星湾村寻找作者金乌,郝正早期也赴三星堆寻找父亲,两人相遇,携手探寻游戏线索,却发现游戏已成泡影。。