One of the agents you can talk to in order to start the mission is available if you have 3.0 standings with the Caldari state. Therefore the agency (and the standings page) inform you once you reach 3.0 that you have unlocked a new epic arc, as you truly have.
Of course, it’s an arc for pirates so maybe the caldari won’t like you running it, but it is something that your high caldari standings have enabled and you should know about it.
Do you want to be a pirate or a cut-throat corporate goon? The choice is yours…