Don't Come Down

Twenty years ago, Shen Lu's sister Shen Lu disappeared on a rainy night. Everyone said that she was washed away by the flood. Twenty years later, a hairpin stuck in a manhole cover led Shen Lu to the dark underground drainage system of the city. Former detective Lu Chen joins her investigation, and the two discover that there are people alive, people dead, and people who have been writing in the dark for twenty years. Shen Lu must go down - even though she is afraid of the dark.