Starlight lay on the bed, thinking. She had nothing better to do here. I am extremely bored. What should I do?

Earlier today, Twilight and Spike had introduced her to this dungeon. While she was exploring the cell, Twilight locked it before informing her that no magic can be used in a closed cell. Both of them then left.

Since the cell had no clock, the unicorn had no idea for how long she was there, alone. It might have been an hour. Or two.

She got up and looked at the bookshelf. Typical Twilight. Who would want to read while imprisoned here?

Growing extremely bored, she picked a random book with her levitation. Nothing.
Starlight groaned; there is no magic.

An eternity later, or rather five minutes later, after having seen all the boring books, Starlight heard footsteps.

"Starlight? Are you still down here?" A familiar male voice echoed.

"Spike! Thank goodness you are here," Starlight sighed. "Perhaps you can let me out now?"

Spike came in front of the mare before nervously saying, "Sorry. But only Twilight has the key."

"Well, then go call her. Please!"

"She rushed off to Canterlot earlier today!"

"Canterlot?!" Starlight went back to lying on the bed. Great, me and my big mouth... She got up, only to see that Spike was gone.

She looked around the cell, looking for distractions, when she a small, high window with bars. Perhaps I could attract somepony's attention from outside. She pushed the crate to the wall and climbed on it. The window led to the outskirts of Ponyville. It was then that Starlight realized that the dungeon was underground.

"Hey! Please! Somepony help me! Get Princess Twilight for me! Please!" Starlight started to shoout while waving a hoof through the bars. Well, nopony heard her as she was facing the outskirts of Ponyville.
She groaned again.

It was only when Princess Luna had eaised the moon that Starlight heard more footsteps. A certain purple alicorn finally came.

"Starlight! I'm so sorry! I never should have left you here! Sorry!" Twilight unlocked the door.

Without a word, Starlight left the dungeon and got out of the castle to take a lungful of fresh air.

Author's Note

Just a bonus chapter. A sort of epilogue.