It's the late 1960's. Just for a lark, graduate student Eddie Jessup, understood for being non-traditional, dazzling as well as a little crazy, conducts trying outs an isolation chamber, using himself as the topic. His experiences in the chamber create him to visualize, a lot of the images being religious-based despite he not being a religious man. 7 years later, he is a respected full professor in the Harvard Medical School. Thinking he has lost his edge and also has actually fallen into an unwanted state of respectability, Eddie decides to resume his collaborate with sensory deprivation, this moment utilizing hallucinogens, specifically untried ones utilized in mystical Mexican routines, to improve the experience of being in the isolation tank. After preliminary examinations, he declares he entered an alternative physical as well as mental state. Although unbelieving of Eddie's cases, his associates Arthur Rosenberg and also Mason Parrish, as well as Eddie's wife, Emily, who is in her very own right a highly regarded scholastic, are worried for Eddie's well being. However, if Eddie's insurance claims are undoubtedly real, he might do irreversible damage to himself and others around him, especially if his transformed states are unmanageable.