Dr.Pretoriusandhiscolleaguesareworkingonasensationalexperiment:bymeansofstimulationofthepinealgland,theywanttoopenthehumanmindtohigherdimensions.Whentheexperimentsucceeds,however,theyareimmediatelyattackedbyterriblelifeforms,whichapparentlyarefloatingaroundusallthetime.WhenDr.Pretoriusiskilledbyoneofthem,Dr.Tillinghastisundersuspectandthrownintothepsychowardduetohisstories.OnlytheambitiouspsychologistDr.McMichaelsbelieveshimandwantstocontinuetheexperiment.