A poignant and engaging thriller, Vivian Qu’s feature debut plunges us into the fascinating world state surveillance in China, following a digital mapping photographer’s investigation of an "off-the-grid" hidden alley.

Li Qiuming is a young trainee at a digital mapping company. One day while out surveying, Qiuming has a brief encounter with an attractive woman who disappears into a quiet alley. He soon learns that the data he collected of this alley cannot register in his company’s mapping system. He goes back to the area for a second survey…