In a forgotten factory, a series of murders shrouded in mystery unfold, as a killer's symphony of terror begins to resonate with the echoes of the past....

In a shadowy factory, a deadly game of cat and mouse unfolds as a desperate worker seeks to outwit his seemingly untouchable employer, leading to a chilling climax of betrayal and revenge....

In a secluded factory, whispers of a dark past echo through the walls, leading to a chilling reunion that threatens to unravel the lives of three strangers bound by a sinister secret....

(A worker's life in a factory is upended when he discovers a deadly secret, leading him down a path of betrayal and despair, culminating in a chilling act of retribution.)...

In a Wenzhou factory shrouded in darkness, a series of mysterious deaths unravel a web of deceit and murder, leading to a shocking revelation about the factory's true nature....

When a factory worker stumbles upon a chilling secret, their life is forever altered, leading to a series of events that question the very essence of their reality....

In a hidden factory, a desperate whistleblower uncovers a chilling truth, leading to a deadly race against time....

In a factory shrouded in secrecy, a series of mysterious events lead to a fateful confrontation between the boss and his trusted employees, culminating in a shocking revelation that will change the lives of all involved....

In a worker's village shrouded in mystery, a factory's shadowy secrets lead to a chilling murder. As the truth unravels, a killer's past and present collide in a twisted tale of revenge and deceit....

In a factory shrouded in sorrow, a killer's past collides with the present, leading to a chilling confrontation that shakes the very foundations of the factory's existence....