(Photo Credit: gifsthebrony at http://gifsthebrony.deviantart.com/art/Canter-Tailor-Soldier-Shy-308426272)
Based off the movie Tinker Tailor Soldier Spy. All rights to their respective owners.)

When Rainbow Dash (aka. Control),the head of Equestrian Intelligence (aka. The Elements of Harmony), sends Pinkamena Diane Prideaux (aka. Pinkie Pie) to meet the Changeling General, she is shot and captured.

Control and her second-in-command Flutter "Smiley" Shy are forced into retirement.

Years later, "Smiley" is brought out of retirement and finds Pinkie Pie, who claims there are moles in Equestrian Intelligence. She only refers to the suspects as "Canter", "Tailor", "Soldier", "Shy".