This episode plays like a soap opera.
Some sort of virus is picked up that acts to the crew members of the Enterprise like alcohol. It lowers their inhibitions, revealing shocking new versions of our fine crew.
The ending of the episode (dealing with the Enterprise reversing time, Superman style) is as sensational as seeing Sulu hop around without his shirt off, or Spock crying.
I recommend it for the sheer interest in seeing these characters in a different light, even if the situation is admittedly not earned and offers no other merit worth mentioning.
Stay tuned tomorrow for "Charlie X."