Lyra Heartstrings, as everypony knows, has a quirky obsession with humans. In fact, she'd give anything to see one up close and personal. So when she hears about a portal in the Crystal Empire leading to an alternate universe full of humans, she absolutely must go there and see it for herself!
Luckily for her, a certain Master of Chaos is willing to pull a few strings and grant her access to the world known only as Canterlot High. But for some strange reason (that is to say no reason at all), Lyra doesn't change shape whilst crossing dimensions. What's more, the reaction of the students to a mint-green unicorn wandering into their midst is, well, not what she expected.
Cookie for anyone who can guess what this little ball of crazy is based off of.