Painter David Drayton took his young son Billy to live in a beautiful town in Maine. The town that had been baptized by pouring rain should have been refreshed after a storm. The smell of mud and grass, but the thick black mist that suddenly came up against the wind in the distance gave David a vaguely ominous feeling.
The thick, unnatural fog formed almost surrounded the entire town in the blink of an eye. What the townspeople could not imagine was that there was a terrifying and evil supernatural force hidden in the thick fog, which was under attack. Not only humans, but also all living things, for a time, all living things become charcoal. There are different opinions on the origin of "Mist". The most reliable one is that a highly secret military base next to the town is conducting a secret experiment called the "Arrow Project". However, the experiment failed and the surrounding creatures have become victim. The residents of the small town are not so concerned about the origin of the "mist". After all, when life is hanging by a thread, who has time to think about other things? How to escape from these deadly but intangible dense fog attacks is the most important thing. Immediately, they discovered that it was almost impossible.
David Drayton and his son led a small group of people to highlight the encirclement of the diffuse fog, retreated to a supermarket, and temporarily escaped the disaster. However, at this time, David realized that the most terrifying thing in this world is not the black and dark things outside, but the townspeople who were once so familiar with him who hid in the supermarket with him. Humanity and life are in This moment has been a huge test.