A ring of rope-like red marks inexplicably appears on Mu Yunshu’s wrist, and the same nightmare haunts her night after night.
In the dream, there is an abandoned ancient village, red knots of rope stretching across the sky, and the cold operating tables of a Republican-era laboratory.
To ease her troubled mind, she and her best friend rent an SUV in a small town at the foot of the mountains and hire a local driver to take them into the mountains.
A once-in-a-century rainstorm suddenly breaks, and a flash flood washes away their way back down the mountain while a landslide blocks the road ahead.
The mountainside keeps collapsing. Their phones have no signal, and the three of them are completely trapped in the depths of the mountains with no way out.
The driver confirms the local secret passed down through generations.
The ancient village in the mountains is the buried site of a dark experiment from the Republican era, where a formation of red ropes suppresses the endless resentment of the unjustly dead. The downpour breaks the seal on the mountain, and once the fated person steps inside, the forbidden realm awakens.
With no way back, their only chance of survival is to enter the ancient village everyone avoids.
Withered trees in the forest are draped in blackened old ropes, and an iron rule hangs over them: Touch a red rope, and die.
Fear overwhelms the driver. In his panic, he accidentally touches a knot and is strangled in midair on the spot.
Black fog billows, and the rules of death take effect.
In the shadows of the dense forest, a figure in black lies motionless, its gaze fixed on the red mark burning on her wrist.
Mu Yunshu’s nightmare cycle begins.