The Enterprise answers a distress call from Federation Outpost #4, a monitoring station on the Federation side of the neutral zone with the Romulan Empire. The outposts were established over a century ago and no one has actually seen a Romulan. The Romulan vessel seems to have some type of high energy explosive device as well as a cloaking device to make the ship invisible. When it appears that Romulans bear a strong resemblance to Vulcans, Kirk must deal with a rebellious crew member. He must also engage in a dangerous cat and mouse game with a very intelligent Romulan commander. Written by
Did You Know?
Dialogue in the episode establishes that there are multiple weapons batteries on board, with "helm" and "starboard" weapons being specifically mentioned. See more
The Enterprise first glimpses the Romulan ship via Outpost #4's view screen. Yet, after Outpost 4 is destroyed, the Romulan ship is still visible. See more
[holding a shell of metal
From the outpost protective shield - cast rodidium. This is the hardest substance known to our science.
[With hand pressure alone, the fragment shatters