Sheriff Zhan Yu encountered a man who died suddenly before traveling with her colleagues in the crew. The man stole something on police officer Cai Yin before dying. Zhan Yu and others continued to board the car after handing over with colleagues. What they didn't expect was that the ensuing series of abnormal conditions endangered the safety of the entire train.

Taxi driver's brother Ma Liang captured by by a mysterious man, only clue is the vase but it stolen by kidnapped's friend Yu Dong who pawned it for gambling money.