Missing Link (1974)

john koenig is apparently in a coma following a flight accident and dr. russell desperately tries to bring him back to life. in reality its vital essence is found on the planet zenno, where the scientist raan wants to experience the reactions of the human race to study its heart and brain. raan has a daughter, vana, who seems to fall in love with koenig, upsetting the parent's plans and beliefs.