The forth OVA ‘special’ from ‘Dragonball Z’ and I feel they’ve pretty much landed on a bit of a formula for these at this point.

The plot this time around revolves around ‘Lord Slug’ a mysterious power hungry being with a demon army who arrive on earth accidentally, learn about the dragonballs, with Slug using their power to grant him eternal youth, restored to his younger, stronger self, Goku and the team must work together to defeat slug once and for all.

Lets be honest here, this is essentially just a 50 minute reimagining of the ‘King Piccolo’ arc from ‘Dragonball’ just tiedied up a bit and with some new ‘Z’ characters thrown into the mix. In that sense, it feels incredibly derivative, and kind of throwaway (as most of the OVAs ive seen so far feel)

However, I will say the short does have some fun enough little moments, Lord Slug may be derivative, but he’s at least got a sense of menace about him, and (mild spoilers) but seeing an early ‘proto’ design for Gokus Super Saiyan form was fun!

Visually, the HD scan of this special is crisp and highly detailed, I thought the performances were solid, if not a little goofy (thats not a bad thing honestly!) I cant say I hated it, it just didnt really bring anything new to the table. a fine enough way to kill about 50 minutes. Absolutely non essential, not one i’d actively recommend. But if you’ve watched through all of ‘Z’ and just wanna spend some more time with the gang, this’ll almost certainly scratch the itch.

source https://letterboxd.com/tytdreviews/film/dragon-ball-z-lord-slug/