Long, long ago.
Sister didn't know she would be the Queen Mother of the West, and Brother didn't know he would be Dong Wanggong.
All they knew was that ever since they could remember, they had been living on their own.
Sister was somewhat better off, retaining some impressions of their parents, but Brother, still in swaddling clothes when their parents vanished without a trace, disappeared from this world.
Fortunately, they had an older brother, and the three siblings depended on each other for survival; although their days were poor, they were not devoid of many joys.
As long as their older brother was there, all dangers were kept outside their home, and there was no need to worry about food—the towering figure who could do anything took care of it all.
However, one morning, when Sister and Brother woke up, they discovered that their older brother had suddenly disappeared.
At first, they thought he had gone out hunting.