The whole plot revolves around younger generation of moon colonists resisting the regime forced upon them by Earth government that treats them like cattle who are marked with number rings on their forehead and exist to mine resources to pay off the debt to Earth. I don't remember the show ever explaining why anyone would move to the moon knowing they will be pretty much wage slaves for many generations until they return what Earth has invested into them. It also doesn't explain why after that anyone would agree to work under the conditions that are apparently so bad it made a lot of 3rd generation settlers to revolt. I'm only going off of what Dog says cause as far as visuals go we do see that settlers don't live the most luxurious lives and they do have to wear the rings on their forehead which can be rather humiliating but otherwise they're not shown to be awfully miserable in their situation. Still though without the OVA giving the viewer much information I can at most wonder why did they move on the moon, it would be better if show just threw in some reason like it's basically space australia and they sent in a bunch of prisoners for whom working in a mine on an isolated rock in space is preferable to either prison or death.
The OVA also tries to make you care about Dallos, which is basically some machine god embedded into the Moon, settlers are shows to pray to it as if it's some sort of god and older settlers always refer to it like some deity and there are only vague things you learn about it now and then like at some point people had to seek refuge inside the thing and it was apparently built by someone who was on the Moon before them but you never get any proper, concrete information and with how much the show likes to bring it up I don't think it's the best idea to keep viewer in the shadows, it doesn't make it seem mysterious it just makes it seem like a plot device.
What I'll give Dallos a bit of credit for is that it doesn't treat either side as either just good or just bad and has nuance within both. While it's hard to sympathise with guerillas without their allegedly miserable living conditions being all that bad you can still kinda sympathize with them a bit based on what IS shown. There's also a perspective of older generation that avoids fighting because despite their frustration they understand that the conflict will likely improve their situation in the long run. Similarly while there are less Earth character in this we still get people who can relate to opposing side.
However in every other respect the show falls flat. There's a small betrayal subplot on the Earth side that's a little nonsensical and hard to care about cause individually most characters are about as interesting as a rotten potato. It's not interesting to follow them and hard to care about happens about them. The show is mostly plot driven anyway but that means the romance subplot is as boring as mandatory romance subplots usually are.
When it comes to art it's a bit better. The character design is rather standard for 80s, some silly haircuts here and there, there's a clear distinction between Moon and Earth characters, pretty much every woman is a babe and every adult man is a meat brick with muscle pipes growing out their killer pecs and bulldozer buttocks. What I'll commend are the mechanical designs on the sides of guerillas, at the start of the show we see one of the characters mess with a hydraulic robot arm which later gives the leader of guerillas an idea to use them as a weapon, at first he just uses one to wear on himself and breaks down a prison wall but later on they start utilizing their mining robots for battle and it does some hints of industrial equipment in its design which looks pretty sweet. On Earth's side though we mostly just get generic space fighters and rather bad looking suits of armor with a boring color scheme and way overdesigned helmets.
When it comes to animation it's not one of those OVAs with ridiculously good animation but it's still rather well animated which makes occasional fights a somewhat fun watch. While it's not as fluid as usually expected from overblown 80s productions it still has some style to make it worth watching.
Overall I wouldn't recommend this to anyone cause there's hardly anything to gain from it but if you do it's not gonna be too terrible of a time and it's only two hours.
