On a distant planet far away, four heroes have defeated a delusional tyrant, and defeated a powerful enemy. The Vault on Pandora has been closed and new Vaults have been found on other planets.

Back in Equestria, Celestia has gotten word of mysterious symbols appearing around the world. She tried to study them, but to no avail, so she sent all her findings to Twilight. She gave Twilight the task of figuring out the mystery.

A few weeks passed and ponies started creating legends about the symbols, while Twilight found out that the symbols are about an alien Vault. Soon the legends about the Vault got out of hand, Ponies began talking about what would be in the Vault. Talk of treasure, power, and money beyond imagination, enough to even overthrow Celestia.

Now everypony is on a massive hunt for the Vault, and Equestria has been plunged into chaos. While Twilight still tries to figure out more about the Vault, the rest of her friends have gone their separate ways trying to survive in the new wasteland that was Equestria.

Years later, there are now ponies dedicated to hunting the Vault down, called Vault hunters.