In the IMDb reviews, Hasjtracker calls this the worst show of the series while Tweekums LOVED it. As for me, I'm more agreeable to Hasjtracker's views but I don't think it's THAT bad!
When this episode begins, Quark's Klingon ex-wife (from "The House of Quark") comes to the station to visit. When Worf sees her, he's instantly smitten and thinks that Grilka is the most amazing female he's ever seen! And, surprisingly, for once Worf is jealous that Quark is so close to such a gorgeous lady! Unfortunately, because of Worf's discommendation , there is zero chance that he could ever possess Grilka. However, later, Worf doesn't envy Quark at all. In fact, he must help Quark to avoid being torn in half!
The other plot involves the O'Briens. Miles and Major Kira have been spending more and more time together--intimate sorts of time. And, the two start to realize that his giving the Major massages to ease her pregnancy paints is probably no longer a good idea--but Keiko keeps encouraging these two to spend time together. What's with that?
As I alluded to, I wasn't at all thrilled about this episode. While I didn't hate it, the plots were pretty stupid. It was VERY obvious that Quark was cheating when he fought the duel--so much so that you can only assume everyone is stupid in order to believe it. As for the other plot, there was NEVER any chemistry between Miles O'Brien and the Major--and all this seemed very contrived and dumb as well. It's clearly badly written but some episodes from season 1 managed to be worse!! Perhaps it's the worst of season 5.