The roaring assembly line suddenly became silent. Next to the oil-stained work sign, the unsent distress message was extinguished in the darkness. In the chemical factory late at night, missing female workers, bizarre equipment failures, and the management's secretive attitude woven into an airtight web. When investigators went deep into the factory, they found that every gear told a lie, and every employee's eyes hid secrets - not only chemical raw materials were produced here, but also an abyss swallowing the truth. Who is controlling this dead end? How many souls are trapped in the fog of the Iron Jungle? The moment we step into the factory, we are both players.