The Fuma Conspiracy a somewhat decent tale brought down by it's flaws.
Goemon is getting married when ninjas swoop in! The Lupin gang has to stop these evil ninjas, save Goemon's bride, and try for some treasure, for good measure.
This 80's OVA has the unfortunate distinction of being the only Lupin anime without the usual Japanese voice cast. This is especially bad, because the voices used don't fit the characters at all, and are distractingly out of place. The English dub is not good either.
On top of the unfortunate voice choices, the characterization is pretty weak here in general. The dialogue is not as clever as
usual, and the characters don't gel together as well as they usually do. Inspector Zenigata is very bland in this one too.
Another problem with this OVA is the poor soundtrack. They don't use Yuji Ohno or any classic Lupin themes, and they don't even attempt a jazzy style.
There are some good things though, the animation for example is very fluid, and the art style is nice. There are some fun car chases, and a couple enjoyable action sequences. Any time Lupin and Jigen are in a car, it's decent Lupin fun. Plus Fujiko has some cool motorcycle action.
Overall, this Lupin OVA is really off it's game. It lacks the usual Lupin stylishness and is pretty generic all around. Definitely on the lower end of the Lupin spectrum, but it's a passable if generic action adventure on it's own.