Kirk and Spock visit a mental asylum and encounter a former starship captain who now considers himself Master of the Universe. And, of course, he tries to take over the Enterprise.
Very flawed but quite interesting.
Highlights:
Garth
Marta
Kirk vs. Garth
very interesting (if stupid) resolution
Lowlights:
the dance
weird uggo prisoner line
the coronation
bad continuity
Spockism: “On the contrary, you were treated with justice and compassion, which you failed to show towards any of your intended victims…”