In a city shrouded in urban legends, a subway line is haunted by ghostly whispers, and a group of friends seeks the truth behind the eerie sounds, only to uncover a chilling secret that binds them to the past....

In the eerie depths of the Beijing Subway, a young woman encounters a chilling urban legend, leading her on a harrowing journey through the forgotten depths of the city's transit system....

In the heart of Beijing, the subway system is a labyrinth of secrets and fears. When a young woman stumbles upon the Demon's Den, she triggers a series of events that lead her on a harrowing journey through the depths of the subway, where the line between...