Shen Nian, who had just entered the workplace, was introverted and used to be unknown in life. However, an ordinary commute sent her on a journey from which she would never return. A dilapidated, cracked ancient train roared past, tearing her away from reality and into a strange and unknown realm. The carriage was filled with a suffocating coldness, but there was no one on the regular seats. But not long after, a "passenger" wearing a black robe with an expressionless face and empty eyes suddenly appeared. With every subtle flicker, his figure seemed to be twisted in the cracks of time and space... And this was just the beginning of the journey.
On this train that leads to the deep realm of endless nightmares, Shen Nian discovers a series of chilling rules: every time the bell rings, you must follow the prompts to choose the corresponding carriage; you are not allowed to talk to other "passengers" without authorization; you are not allowed to violate the limit of "stay time in the station"... However, behind each rule, there is a terrifying price hidden. Faced with the ensuing life and death choices, can Shen Nian find clues from these incredible mysteries? At the end of this journey, is it the road home or the never-ending abyss?
