In Shanghai, 1930, the fog never quite lifts.
Shen Yejin, a reporter for the Shanghai Gazette, has a secret: when she touches a dead person's belongings, she can see the final ten minutes of their memories before death.
For three years, she has used this ability to search for one person: her missing younger sister, Shen Yeqi.
That is, until a murder takes place on Avenue Joffre.
Mingzhu, a dance hall girl, is found dead deep in a lane. When Shen Yejin touches her fingers, she sees a pair of eyes in the girl's final memories.
Then she chases a woman at the mouth of the lane. The woman turns around. Her face is a stranger's, but her eyes are exactly the same.
A second victim appears. On the wall of the lane, someone has written two words in charcoal.
The second.
The third is on the way.
And those eyes have been watching Shen Yejin from beginning to end.
As if counting.
