Wildcard is a pegasus pony living in Manehatten, working as a bagger at a local store. Her life is pretty dull, but she doesn't mind it one bit. But everything changes when Manehatten is bombed in an attack by a terrorist group with an unknown agenda.

And Wildcard, injured, becomes the center of attention because of her survival at the near epicenter of the destruction. Celestia sees something special in this pegasus, and asks her to help with taking down this mysterious group…

A group known as… the Deck of 52.