Trixie is given the entrance exam for Celestia's School for Gifted Unicorns at the same time as Twilight Sparkle. Rainbow Dash's first sonic rainboom unlocks not only Twilight's own hidden potential, but Trixie's as well. Both Trixie and Twilight Sparkle are taken on as Celestia's personal students. From there they become the best of friends, an inseparable pair.

However they soon learn that time views even the closest friends as nothing more than playthings for its own amusement.

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