has been sent to explore a planet at the edge of the galaxy. Kirk, Spock, McCoy, and Sulu beam down and discover a number of buildings radiating power, but no inhabitants. As they go to investigate, Sulu finds a small mobile plant. When he picks it up, it stings him. Spock discovers that they are being scanned and they go in to investigate. They track the probe to a wall protected by a force field intended to protect that particular building. McCoy picks up an incredibly strong life humanoid life force, but before they can investigate, Sulu collapses in pain. McCoy determines he's been poisoned by the plant but can't identity the correct poison. With time running out, McCoy tries an antidote without success. However, four plant-like beings arrive and the leader, Agmar, offers his assistance. They have no choice but to accept and Sulu is quickly cured. ..Read the full recap
Sulu: It's a mobile plant. When it stops, its roots bore back into the ground. They're all over the place. I think it likes me.
Kirk: We always encourage our officers to make friends with the natives.
Spock: I am pleasantly surprised at your capacity for deductive reasoning, Captain. When you are not being bellicose, there appears to be no end to your arsenal of formidable talents.
Kirk: By the way, Mr. Sulu, any chance of teaching me that body throw? Could come in handy sometime.
Sulu: I don't know, sir. It isn't just physical, you know. You have to be inscrutable.
Kirk: Inscrutable? Sulu, you're the most scrutable man I know.