It's about Zhang Baoqing, a young man who came a long way to Dongbei and tried to find the cure for his teacher, but found himself might already involved in something very dangerous that seemed to connect to the mysterious sky hole.

In a small seaside town, two schoolgirls are sexually assaulted by a middle-aged man in a motel. Mia, a teenager who was working on reception that night, is the only witness. For fear of losing her job, she chooses to keep silence.

A con man and a Chinese government agent each have their own reasons for trying to recover a historical artifact from agents of Japan.