Aika and her teenage partner get involved in a case to acquiring an artifact called Lagu the thing is that Aika accidently becomes rather attached to the artifact and is given some super powers. That's when things really go bad for them as a certian crazy man, Rudolf Hargenwith, a thing for pretty ladies decides that he wasts Aika and the Lagu. Aika and her teenage helper find themselves kidnapped and aboard a mega huge battleship that eventually turns into a space ship.
Aika uses the Lagu and kicks lots of cute girl ass and beats the crazy man. And that's only half of the OVA series. The second half revolves around the remainder of the Rudolf's female forces going after the team to exact revenge. This means it's sexy girl on girl combat in what has to be one of most fanservice ladden series that I've seen that doesn't actually show much nudity, just lots of upskirt panty shots.
I was watching this on DVD from Netflix but they dropped the second disk so had to download the series to finish it because I haven't been able to find it anywhere anymore. Oh well at least I got to finish the series eventually. For something this old it does look dated now but isn't the worst that I've seen of older ecchi series. The only real problem I see about not being able to finish watching the DVD is that I didn't get to finish watching the live action part that came with the DVD disks.
Check out this clip:
