Rainbow Dash loves nothing more than to win. But what happens when a timeline fault causes her to lose? To defend a friend's honor, and to earn her own, she enters the race of her life... and fails. No sonic rainboom, and no cutie mark. But that all happened a long time ago.

In more recent news, strange things have been happening. Unicorn magic breaks its normal bounds, Earth Ponies are hauling gemstones out of mountains, and Pegasi are fighting an army of dragons. Celestia hasn't left her caste in weeks, the moon is off its normal course, and it's the anniversary of the day Lady Twilight Sparkle went missing, ten years ago.

It's up to Agent 2-20 to investigate these strange happenings, discovering something much deeper in the process.