Rainbow Dash and Pinkie Pie, to the Mane 6 perspective, are just normal ponies and friends to them, doing their normal everyday lives. Octavia, to her friends perspective, is a very talented pony. And Scootaloo, according to the CMC, is a very loyal member.

But what they don't know, is that these four ponies have a dark secret: they are assassins, keeping Equestria safe from harm. Take to their path as part of their brotherhood(or sisterhoof): The Assassins.

This story is a sequel to Assassins Creed-Equestria

After the events of 'Assassins Creed-Equestria', our four pony Assassins needs to find the other Pieces of Eden, whenever the cost.
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The Assassins Altair, Ezio, Connor and Edward, after being dead from their plight, have been transported to Equestria by Jupiter, Minerva and Juno. They will soon learn that this place has some similarities to their world.