Kenneth Magee, a brash young American writer, accepts a bet to write a Gothic novel in 24 hours. Seeking inspiration, he arrives at a desolate Welsh mansion, ostensibly unoccupied for years. As he settles in, he's startled by the appearance of several strange figures, including the enigmatic owners and their peculiar guests. Each character introduces unsettling elements and cryptic warnings, creating an atmosphere dripping with suspense. Unnerving noises and eerie presences intensify the fear, making Kenneth question the true nature of the mansion and its inhabitants.

As the night progresses, secrets unravel about the mansion's haunting past and the dark deeds that transpired within its walls. Tensions rise, culminating in a web of deceit, concealed identities, and sinister motivations. Kenneth's quest to complete his novel becomes a fight for survival as the line between fiction and reality blurs. With each passing minute, the danger escalates, drawing Kenneth deeper into a macabre narrative where every shadow hides a threat.