A powerful being named Azrael is critically injured during a misunderstanding with the queen of Equestria and Luna forms a "Familiar Contract" to save him. Civilizations will rise, a mysterious darkness shall surface and a powerful bond shall be formed, and it all started with "the Familiar".
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Notes:

The only thing I feel I have to explain is the crossover tag. The reason is because I am going to be using some things from "The Matrix"; more specifically from the "Animatrix: Second Renaissance". These things being the ground work for the Azrael's backstory and the robots like the sentinels. "The matrix" and "The Animatrix" are owned by Warner Bros and Roadshow respectively. And yes, The Anime "Familiar Of Zero" did inspire me so credit the owners of that anime. Apart from that, there is nothing else really important for me to note so, without further delay, read on and I hope you like it.