Hopefully, you won't have needed to see it. Then again, when I showed it to my sister she ended up asking me a number of questions and then watching the episodes I downloaded off the internet.
To answer the inquiry about spoilers - Yes, there are spoilers. The video begins at the beginning of the series and continues through the battles the heroine of the story till the end of the series.
If you are bothered by AMVs dealing with mostly action/fights then you probably don't want to watch this one. I did not insert many 'normal' scenes.
If you need to know anything else, I can respond to this message for another half hour (college classes...).