Spoilers for all of the my little pony equestria girls movies. You've been warned...
It was the night before graduation for Sunset shimmer and twilight sparkle, since the both of them were almost done with high school. The two girls had been though many adventures together, shared some memories and made some friends. Sunset used to be evil but after a battle that ended up defeating her, she learned her lesson. Twilight however has a more interesting tale, technically she is a different version of another twilight sparkle. The original Twilight Sparkle is not a human, instead she's a pony. But this version twilight is the human world version, she's also kinda as sci-twi because of her intelligence. Sci-twi used to be evil as well but she was forced to, she used to go to a school called crystal prep. Where she was treated like garbage and was blackmailed by the principal. Then she was forced to use her necklace full of power to win a competition against Canterlot High School. Sunset shimmer is a student at CHS and was there, then Sci-twi turned into a monster that destroyed the school. Thankfully due to sunset and her friends, sci-twi was turned back to normal. After that, sci-twi decided to move to CHS. And since then she and sunset managed to get through high school together, and now the both of them are now going to graduate. But the both them had to wait until tomorrow to graduate, so both of them slept in their own separate houses. The time was 11:50 and the two girls were asleep when they both woke up feeling weird, Both of them went to the bathroom and looked into the mirror and discovered something horrific. They were disappearing at a pace so fast that they didn't have time to call for help, soon after the both of them were gone. Just a couple of hours until they graduated. A couple of hours until they moved on to a newer part of their lives...