The Secret Service: an elite military unit especially trained to stop any kind of threats to the Crown and the Ponykind.
Salvation: a terrorist organization that wants the total separation of the three pony races. But in order to achieve their goals, they have to get rid of the four alicorn Princesses.
Are they prepared to defeat the Secret Service and their best agent, Blue Blood, or they'll fail to the master of all spies? And Blue Blood is ready to face the greatest enemies of his career or he would finally be defated by this mysterious group of racists?