OFFICIAL SYNOPSISNear the Romulan/Federation Neutral Zone, a long-lost philanthropist, Carter Winston, is discovered on board a damaged one-man vessel. He is reunited with his fianc?e, Lieutenant Anne Nored, on board the U.S.S. Enterprise. Immediately following their reunion, Winston tells her that he has changed and can no longer marry her. The Enterprise computer reveals that Winston is actually a shape-shifting Vendorian. Winston eventually takes the Captain's form and orders Sulu to steer the Enterprise into the Neutral Zone. Kirk discovers the ruse and orders the ship out of the Neutral Zone.
Romulan ships, having been advised of the breach of the Neutral Zone, surround the Enterprise. The Vendorian, disguised as an Enterprise crewman, damages the deflector shield, which requires two hours to repair. Later, the creature reveals his identity to Nored, explaining that her former fianc? is dead but since he had absorbed so many emotions from human males, he indeed can love her.
proceed to attack the U.S.S. Enterprise. Realizing
that he has put his love in jeopardy by destroying the
ship's shields, the shape-shifter forms himself into a
deflector shield around the ship. After the Romulans
retreat, the Vendorian reveals that he is a spy for the
Romulan Empire, but he could not allow Nored to die in
battle. Kirk informs him that he will stand trial but his
efforts to save the ship will be considered. Nored tells him
that he is much like her former lover and that he will enjoy
life on Earth, perhaps even together with her.