This was such an "aca-disappointment"!
If you came back for the laughs, the sassy characters, the anti-stereotypes and the music, be prepared to be completely disappointed.
The plot is a mess: you'd think it will actually have anything to do with Pitch Perfect 1 and 2, but it doesn't. Sure, it could be because the Bellas are now graduated working women going near their 30s, but this isn't the reason. The reason is that this movie has very little to do with singing in general, songs (which are now full covers and not cleverly mixed songs) being just a sad garnishment for a plot that doesn't know where the focus should be. Oh, you think the main thing about the movie is a-capella vs instruments? Nope, it isn't. Oh, wait, could it be that this movie is about the Bellas moving on from their a-capella group? Well, it could have been, if only the entire plot wasn't taken over by [spoiler]Fat Amy's evil dad[/spoiler]!
Pitch Perfect 3 is full of moments that show the movie is clearly set in an alternate reality where everyone hates a-capella groups (or at least the Bellas), as they are considered worse than a full-instruments band by default. Also what is the point of introducing like three bands that should compete against each other for DJ Khaled's attention (he is considered a good musician in this alt. universe, I know right?!) if you are not gonna show them actually COMPETING?
I'm not trying to say that the whole [spoiler]Fat Amy revealing herself to be the tough daughter of an evil mastermind[/spoiler] wasn't funny! It was, and so was [spoiler]that sort of Taken parody fight between Fat Amy and his dad's goons on the yacht[/spoiler], but it felt too much like I was being sidetracked by the main focus (or at least what have should have been) of the movie: the competition!
Oh, and soooo many wtf moments and weird dialogues...
A franchise ruined forever and totally not worth watching!