The IKS Rotarran arrives at DS9. General Martok arrives to inform Worf of the planet Omicron Lamda III and rumors that there are hoards of wild Tribbles there for the hunting. Martok, ready for adventure with a gleam in his eye, lobbies Worf to join him in the next Great Tribble Hunt, enticing him with the glory of the hunt, Worf's name going down in history, the subject of songs forevermore. Worf is initially reluctant to go, but Jadzia learns of Martok's plan and is eager to join.
The Rotarran arrives to Omicron Lamda III but has little success in actually finding any Tribbles. Unbeknownst to anyone until later, Tribbles have evolved almost human-level intelligence, teeth, and much greater mobility (they can roll around and leap with surprising speed), allowing them to mostly avoid the intrepid hunters. More than that, the Tribbles can now reproduce at will increasing their numbers at vastly greater rate than ever before!
Furthermore, Tribbles are able to sneak on board the Rotarran in numbers and remain in hiding until they attack! Tribble vs. Klingon for control of the Rotarran! The battle rages, and the Klingons are only just able to regain control of the ship by the time they arrive back at DS9. Worf and Jadzia are beamed back to the station, bloodied, bruised, with torn clothing, but alive, if barely. In a final gesture of revenge, the Rotarran beams an entire shipful's worth of Tribbles onto DS9 before blasting off at maximum warp, Martok's last message being "Koloth says hi!"
Later, Odo is known to endlessly mock Worf for losing to the Tribbles in their Great Klingon Hunt.
Next episode: Sound and Fury