The three teams consist of experienced paranormal investigators, psychics, and skeptics who are all tasked with documenting and analyzing the hauntings in each location. As they delve deeper into the supernatural occurrences, they uncover dark histories and uncover malevolent spirits that are determined to make their presence known.
Each team faces unique challenges and encounters terrifying phenomena, from poltergeist activity and demonic possessions to ghostly apparitions and chilling EVP (Electronic Voice Phenomena) recordings. As the days progress, tensions rise among the team members as they struggle to maintain their sanity in the face of relentless paranormal activity.
Throughout the experiment, the teams consult with experts in demonology and paranormal psychology, trying to unravel the mysteries behind the hauntings and protect themselves from the malevolent entities that lurk in the shadows. As the 28 days draw to a close, they must confront the spirits head-on in a final showdown to determine the fate of their souls.
In the end, only one team will emerge victorious, having successfully completed the experiment and gained valuable insights into the afterlife. But at what cost? The harrowing experiences they endure will stay with them forever, proving that some hauntings are not easily explained or forgotten.