A young talented psychiatrist, James Richardson, receives an offer to work with the famous charismatic doctor Hugh Maitland. This is a unique opportunity for him to take part in an interesting experiment from a scientific point of view. Six seriously ill women are immersed in artificial sleep, which should heal them and return them to a full life. But are Maitland's goals really that noble? What is a true experiment? Meanwhile, strange, sinister events occur in the hospital. Dr. Richardson cannot find any other explanation other than the intervention of supernatural forces, but the outcome turns out to be even more unexpected...