While meditating near a waterfall, Piccolo senses great danger coming to Earth. And that's another alien invasion lead by Lord Slug. The last decedent of the extinct Super Nameks. A more powerful type of Nameks that were once living on Planet Namek. Lord Slug intends to collect the Dragon Balls to gain eternal youth and freeze the entire planet to claim his own after being exiled for so long from his old planet. The Z Warriors try with all their might, but all hope seems lost after seeing what a Super Namek can do. But that's not the case when Goku finds a way to defeat this green menace.
The story is average and with the movie only being 46 minutes long. It could of been awesome if it were longer than that. If that happened then it would include a whole lot more to the story. But instead it feels like watching a episode like the previous few movies of DBZ.
It's another alternate storyline of the TV series, and it mostly takes place after the "Tree of Might film" cause this one doesn't fit anywhere in the any of the TV series sagas.
Overrall it's a good flick, but not the best Dragon Ball movie compared to the others. Only recommended to the fans only while it'll be turn done by the non-fans.