
I know this review is probably pointless to most people, but I had a hard time finding info about the movie in detail when I was trying to decide whether to watch it or not after watching the first season so hopefully this will be of use to someone! Also, for full disclosure, this was written from the perspective of someone who has only watched the anime and has not (yet!) read the manga.
This movie recaps roughly the second half of the first season of Haikyuu.
[spoilers if you haven't seen season one] The movie covers two arcs: Karasuno's matches with Date Tech and Aoba Johsai at the Inter-High tournament. Most other arcs/sub-plots have been excluded or greatly cut down. [end spoilers]
Would I recommend this if:
[minor spoilers ahead] a small scene about the Date Tech team about halfway through the movie [end spoilers].
Compared to the first movie's new scenes, I didn't really think this was worth the time, especially since I don't personally care much about the characters shown in this new scene. If that includes you, then maybe you can come back to this movie far into the future when you want to scratch the Haikyuu itch, but don't want to commit to completely rewatching an entire season or the entire show.