"Che Mo", a mysterious five-person organization.
Members: Leng Xuanqing, Xia Chen, Dugu Hanluo, Yi Ruoli, Ye Shengnuo.
Almost no one knows: "Che" means "withdraw", "mo" and "devil".
The five people silently worked to exorcise demons in the dark until...
Xia Chen was diagnosed with leukemia!
Time and space flow...