When the cold black ring on the wrist is branded on the skin, the scarlet 72-hour countdown begins to beat, and five men and women who have never met before are forcibly dragged into a desperate situation called "The Hanging Corridor".
·Jiang Yu (former profiler): His sharp eyes penetrate people's hearts, but he is burdened with a heavy shadow.
·Su Lan (Physics Genius): Logic comes first, he is obsessed with deconstructing rules, and his emotions are almost frozen.
·Wei Zheng (wilderness survivor): Intuitive as an animal, tough as a rock, looking for life in the ruins of civilization.
·Lin You (Mechanical Girl): Code and mechanical spirit flow through her fingertips, she is afraid of people but longs for connection.
·Shen Xingyao (folklore suspense writer): Perceives subtle emotions and ancient symbols, but is also easily eroded by darkness.
Survival is the only rule and trust is a scarce resource. They must use their respective talents - insight, puzzle solving, survival, creativity, empathy - to navigate the shadow of betrayal and twisted rules. However, the "Sands of Time" and "Fragments of Truth" obtained by clearing the level are pieced together, which is a cruel origin that is far beyond imagination: the cloister is an ark of doomsday and a melting pot of consciousness. The countdown on the wrist is not only related to personal life and death, but also points to the end of the annihilation of the entire dimension.
Can the five reverberations find a way out of the hanging abyss before returning to zero, or... Create a new future?
In the ghostly applause of the silent opera house, their fate has been frozen.
