Dr. Brogan receives Helena as a patient, who has fallen into a vegetative state after witnessing the horrendous murders of three of his companions. Brogan, will soon realize that Helena is not a normal patient, when the young woman begins to transmit painful and violent images of the events.

A group of students undergoes an experiment conducted by American scientists. It consists of testing the effects of a new drug, which allows a dream generated by one person to be shared by several individuals.