The Immunity Syndrome

Bound for shore leave after a particularly difficult mission, the U.S.S. Enterprise receives an emergency rescue call. Contact has been lost with system Gamma 7A and Starbase 6 wants Kirk to check it out. The captain explains that they're on their way to shore leave but the Starbase is insistent... find out why there's no contact with Gamma 7A.

Spock, at his station, nearly collapses in pain, causing Kirk to send him to sickbay for a check. The Vulcan tells them that the starship Intrepid has been destroyed... along with the 400 Vulcans on board. Their combined screams of anguish are what caused his pain.

Reaching the proper coordinates, they discover that the Gamma 7A system no longer exists. There is a huge, black blot in the space before them which defies even Mr. Spock's scientific diagnosis. They penetrate the blackness, only to find a gigantic, multi-colored amoeba. The amoeba is moving mindlessly through space, absorbing all planets and ships in its path. If it isn't stopped, it will continue to seek out new planets and solar systems for food. The U.S.S. Enterprise attempts to kill the amoeba, but cannot. Neither can it leave the black zone of negative particles that surrounds the organism.

Spock and McCoy both volunteer to take a shuttlecraft into the amoeba and Kirk decides that Spock is more qualified for the job. He sends his friend out with the certainty that he'll never see him again.

Spock discovers that the amoeba is about to reproduce, sending more of its kind out, into the galaxies. McCoy tells Kirk that the starship is like an invading bacteria to the amoeba, against which it immediately creates an immunity syndrome to protect itself. They decide to detonate an anti-matter bomb at its nucleus. As the bomb explodes, the U.S.S. Enterprise pulls itself and the shuttlecraft away, just in time. Spock, alive and unharmed, returns to the bridge and his duties.

Cast:

William Shatner as James Tiberius Kirk™

Leonard Nimoy as Spock™

DeForest Kelley as Leonard H. McCoy™

James Doohan as Montgomery Scott™

Nichelle Nichols as Uhura™

Walter Koenig as Pavel Andreievich Chekov™

Guest Cast:

John Winston as Lt. Kyle