DS9 starts up what it calls "the final chapter", a nine part finale, with this Ezri/Worf romance episode that's great for fans of the Daz/Worf relationship but a bit of a snoozer for everyone else.
Ezri and Worf get the A story, but it seems more like a Jadzia thing than an Ezri one. (If Terry Farrell was still with the show at this point, they could do the same plot). It's an "Out of the frying pan, into the fire" adventure away from the station, giving the two a chance to bicker and quarrel, and ending with... well, as it always does in this sort of thing. Joining the series so late, it's a challenging for Nicole de Boer to establish Ezri as a beloved character even with the best of scripts, but having to deal with old Jadzia stuff doesn't even give her a chance. Unfortunately, Michael Dorn is dealing with the opposite end of the spectrum. He's played Worf in so many Star Trek episodes (holding the Star Trek record for most hours on screen) that it seems as though the writers have run out ideas for him, and they're trying to return to the well once too often (or more).
The station-based B story, on the other hand, shows more promise, though it's more abstract. Sisko and Kasidy decide to get married, but Sisko's status as Emissary complicates the situation. It's a lot of fun to see Sisko so excited about his future beyond Deep Space Nine and undeniable that some interesting things are going to happen no matter how it all turns out.
Meanwhile, there's some exposition from Cardassia Prime, where The Dominion, Damar, and Dukat begin to set some new schemes in motion.
As the opener of a multi-part finale, it's easy to give the episode a pass; it's not meant to pay anything off, it's meant to set stories in motion. But with old Jadzia/Worf issues forming its spine, as an episode on its own it's underwhelming.