"My name is Desmond Miles. I'm a prisoner of war. A war I never knew existed, waged by two groups I never thought were real. Templars and Assassins. The Animus showed me the truth. The things I've seen, the things I've been. A thousand years of history flowing through my veins, brought to life by this machine. They're using me, using me to search for something called the apple. It's an artifact, one of the many so called 'Pieces of Eden'. Templars collect them, that's how they stay in power. If the Templars get their hands on another one, then everything will change. They want to make us all their slaves.
When they first brought me here, I was afraid or what might happen if I tried to fight back. Now? Heh... Now I'm afraid of what will happen if I don't. But I can't do it alone, maybe I don't have to. I met someone; her name is Lucy. I think she's on my side. She's gone now, was taken away by that bastard Warren Vidic and his Templar masters. I don't know what will happen, what will happen to me. All I know is I need to get out of here. I need to do it soon.
My name is Desmond Miles, and this is my story."
- Assassin's Creed 2 introduction.
Desmond Miles is the main protagonist of the Assassin's Creed series and the descendant of a long line of ancestors, whom swear their allegiance to the Assassin Order. He is initially forced to use a machine, called the Animus, created by Abstergo Industries – the modern front of the Knights Templar – to relive the memories of his ancestor, Altair Ibn-La'Ahad during the Crusader era, in their quest to locate the "Apple", a Piece of Eden.
Eventually escaping with the aid of modern day Assassins, Desmond once again uses an improved version of the Animus to explore the memories of his second ancestor, Ezio Auditore da Firenze, so as to learn the ways of the Assassins in a much quicker way than normal.
I AM ~ETERNAL_SONG~'S MULE