Inspired by Pathway To Oblivion.

Spike's away on business at the Crystal Empire while the girls are having their campout back in Ponyville. All tuckered out from working, Spike decides to go to bed early and deal with the rest of his duties tomorrow. Just before falling asleep, the last thing on Spike's mind was the mistakes he made in the past with his friends...

Finding himself in a strange white room, Spike wakes up with a card in his claw and hearing a voice telling him that he is within Castle Oblivion, a place where he can relive his memories within the cards, the voice then gives him a choice: to either return to sleep and wake up back in the Crystal Castle, or tour Castle Oblivion—and his memories—at his leisure. Spike sees an opportunity, to relive his memories, redo his actions, and undo his mistakes, for him, it was an opportunity he couldn't pass up. And it all started with just one sentence:

"This seemed like a boring place to take a nap anyway."

Author's Note:
This story is not canon to Pathway To Oblivion.