Star Trek: Deep Space Nine, season 4
The Way of the Warrior
Summary
A Klingon fleet arrives on its way to expand the Klingon Empire at the expense of the Cardassians in the face of the Dominion threat, and Worf is brought to DS9 to negotiate. * Originally shown as a single two-hour episode, but converted to two separate episodes in later syndication.
Summary from Wikipedia, CC BY-SA 4.0.
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