I think the story of DBZ movies fall squarely into that anime movie non-canon territory of barely having any relation to the show it's about, but that's fine for a show that barely has a plot to begin with. The Legacy of Goku 3 game on GBA actually managed to fit the story of the movie into the plot somewhat. You just have to ignore a lot of sequence of events and do some head cannon to make it work. That was actually where I was familiar with the story such as it is. I had watched my brother play those games way back when and now I was seeing the movie it was based on on TV and that's probably why I tuned in for the whole thing.
But yeah the story is basically there's a new strong guy, go fight him. Like the rest of Dragon Ball. Doesn't really need to be more complicated but they mix it up a bit by adding a new fusion to the mix. The fusion is a slightly different named rehash of Vegetto but it was still cool. The fight scenes themselves were cool. The villain was cool. It was all very cool.
But when the best thing you have to say for a show is that it was cool it probably didn't have much of an impact otherwise. I'm all for it on one level but when you think about what makes a show really great or stand the test of time it isn't just cool fight scenes. So 7 out of 10 it has a little something for everyone.
