A prank to the princess

She runs up to the filly and taps her shoulder. “Hello, thou wouldest-I mean I would like to be friends with you,” The filly stares at her for a moment, then smiles. “Of course I would! My name is Emerald Rock!” She exclaims, barely noticing the fact that her new friend looked exactly like Luna and was an ALICORN.

***

Throughout the day, the two friends did normal foal things, but the sun was starting to set. “Oh no!” Said Luna, remembering her sister. She had to get back to Canterlot. Now! She galloped as fast as her tiny legs allowed her, but was stopped when she bumped into a large, looming figure.