Inside a deserted subway station, a group of people at the station are waiting as usual for the train to lead them where they want. But the sudden look seemed resonant to them, where a group of people, low sound waves completely affected their nerves, making them come out of their secrets, and behave strange behavior.
Mostly, "The Sound" gets by on pure sensation. Mattison finds a lot to look at in the shadows - and in the heavy hum of the subway's deep holes, she finds a lot to hear.
It's not a completely ineffective effort, but Mattison's attempting a different route to chills, and it doesn't work, especially when there's 90 minutes of screen time to fill.