The Enterprise is caught in a time loop.
This is an excellent temporal sci-fi episode with some memorable character moments.
The plot is clever and unfolds in a pretty entertaining way with a number of simple scenes used to unravel a good sci-fi mystery. We know everything is going to work out fine, but how they solve the problem is compelling to watch. What makes it more impressive is that it predates the movie 'Groundhog Day'.
Dr Crusher, Commander LaForge, Lieutenant Data, Commander Riker, and Captain Picard all have strong moments in a story told in a quite unique way. Gates McFadden leads it strongly for large periods and the other cast members contribute well.
Visually it is brilliant, with a lot of scene repetition off set by multi-angle cinematography, and good editing.
The only disappointment to come out of the episode was the lack of follow up to the Bozeman and crew in any other episodes or Trek shows. Especially with the untapped potential Kelsey Grammer brings to the screen here.