Summary:
It's been years after the winter war. Aizen stands as the winner, now the soul king, his espada as his kingdom's general and the shinigami doing still the shinigami thing but under at Aizen's command, the world is pretty much peaceful, a different thing to what everyone expected from the traitor.
The shinigamis, still not trusting the so called king, believing that everything is an illusion, are going on and on about revolution. To Aizen's dismay and patience running low because of them, have the brightest idea to shutter their hopes.
But is his master plan will go well if the one person he needs for this to be successful don't want to cooperate.
His Aizen everything will go as he wants too.
Now everyone let's meet Aizen's Queen.