And Equestria was without defenders.

With the truth out, the official news was told to the world, and a bounty fit for a small nation was put on the head of Twilight Sparkle and her safe return to Canterlot. This was Celestia's ultimatum to the world and all willing to search. There would be no room for negotiation. Either Twilight returned home alive, or Equestria would surely fall to whatever catastrophe came next.

Twiastasia is the story of two lowly thieves, the human Anon and his griffon friend Gile, on a journey to locate and return Twilight Sparkle back to her home. After the search goes dry in Equestria, a plea is extended across the wider world. Thinking this to be a surefire way to both get rich and ascend from their unappealing and dangerous profession, they set off in their foreign land of Echidna to chase the rumored Twilight Bounty.

This story also takes place pre-season three, so it's unicorn Twilight in a much less advanced Equestrian world show-wise. Probably an important thing to mention.