[VOY] Season 3, Episode 16: Blood Fever
Pon Farr is still really silly, making parts of this episode hard to watch. There are some positive elements, and I recommend watching it for some cool foreshadowing.
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Read more at Memory Alpha
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Notes:

B’Elanna, Neelix and Paris go down to a planet because they detected a resource they need. They also find some ruins of a civilization that was destroyed

Tuvok and Chakotay go down, and Tuvok figures out that the Pon Farr has been transferred to B’Elanna

Some aliens show up. They’re really paranoid because their people were destroyed in a matter of hours by invaders they never saw

Paris is a good guy because he won’t take advantage of B’Elanna while she’s in this state, but also it was explained to him that she will die if her Pon Farr isn’t resolved so he’s also kind of a bad guy. Mostly it’s just that Pon Farr is dumb
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