OFFICIAL SYNOPSISThe U.S.S. Enterprise enters an uncharted sector of space where Federation and Klingon vessels have been reported missing every 27 years. While in the Taurean system signals begin to affect the male crew, causing them to hallucinate about beautiful women in peaceful surroundings. Kirk, Spock, and McCoy beam down to the source of the signals. After arriving on the planet they are taken prisoner and rendered unconscious by a group of beautiful, golden skinned women. Scotty takes command of Enterprise but begins to act peculiar himself.
Upon waking, Kirk, Spock, and McCoy discover that they are aging rapidly as a result of life-draining headbands they are forced to wear. McCoy administers cortropine to counter the aging process while Spock, having obtained a communicator, unsuccessfully tries to contact the ship.
On board the
Enterprise, Uhura has taken command due to Scotty's
irrational behavior, while Nurse Chapel acts as Chief
Medical Officer. Uhura orders an all-female landing party to
transport down to rescue the men. The siren women explain to
them that they had fled from a dying planet only to arrive
on Taurus II where they encountered the life-draining force.
The women developed a biological resistance to the force,
effective only if they can replenish their own life-force
every 27 years. Thus they capture men to drain their energy.
The landing party eventually beams the male landing party
back up to the ship just in time to replenish their
life-force. Kirk agrees to transport the women to a safe
world where they will again prosper.