Don't look it up on Wikipedia, you will be spoiled. And believe me, you don't want to be spoiled.
So watch it. Now.
I don't care if you don't like anime, or Magical Girl stories. You'll like this, I promise you.
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Do you need more info? Seriously? Okay then, click below at your own risk. (Trust me when I say, though, that its much, much better to go in blind on this one.
[Spoiler (click to open)]Okay, so you know how people tell you that a series 'takes awhile to get good'? Well, this one takes 3 episodes. And at a total run of 12 episodes (and one movie), that's totally worth it.
The show features gorgeous artwork in a wide variety of styles, tight, clever storytelling, more twists than you can throw a very bendy stick at and enough symbolism and literary references to satisfy any nerd with a useless degree mouldering in their closet.
Also, trigger warnings for, wow, just so many things. Nope, not saying any more than that. Go watch it.