This is basically just 17 minutes long commercial for their first movie called "Bishoujo Senshi Sailor Moon R: The Movie". If you just want it for your completed list go ahead, otherwise I wouldn't recommend it. The story tells you about the main characters and little bit of their history while Usagi is remembering how she met other Sailor girls for the first time. Including little mocking towards Usagi because of how basic she is. The cliche "friendship is magic" thing. I guess it would be good catch up for those who want to remember how it all started before watching the movies. For example.