Celestia, now completely controlled by her evil side, has defeated her sister and trapped the World in an everlasting day, and plans to rule over it as Supreme Empress Daybreaker. She has trapped the Crystal Empire, and made any form of communication impossible for Twilight. The Cutie Map calls for the young princess and her friends to stop this disaster before it's too late.
There is a strong argument to be made towards the Map's lack of a proper understanding of priorities.
Written as an entry in the Season 9 Bingo Writing Contest, based on this prompt.