Telepathy, the claimed ability to send thoughts or images directly from one mind to another, gets tested rather than just argued over. The film commissions new experiments rather than relying on old claims, starting with pairs of twins who say they sense each other's emotions across distance: one twin is put through a series of tests while cameras record the other twin's reactions in a separate room. A Ganzfeld experiment follows, the standard parapsychology setup in which a sender in one room tries to transmit a mental image to a receiver in another, sealed off from ordinary sensory cues. Researchers and skeptics weigh in on both sides, the skeptics pointing to chance and coincidence, the believers pointing to results they say chance cannot fully explain. The film does not resolve the argument, since telepathy resists the kind of objective measurement other senses allow, but it lays out what the actual test conditions look like and lets the footage of the experiments themselves make the case.