Applejack is a tough, honest, and hard-working pony. She has five friends she could ask for and the greatest family in all of Equestria.

However, one night change her forever.

After Apple Bloom doesn't return from a lesson with Zecora, Applejack goes to find her. Only to see Apple Bloom being attacked by Timberwolves! She quickly saves her sister, but not before being bitten.

Now, each night, ponies speak of a strange pony with wood-like legs and glowing green eyes. And Applejack has no idea what everypony is talking about! However, her friends are trying to solve the mystery of the Timber-pony, not knowing it's Applejack herself!

Base on an idea I had back in 2019, I think.