It all happened in Abstergo, the company that discover genetic memories of the modern assassin brotherhood.

Test 16 ,recorded the worst test in the history of their company.I'm Desmond Miles , I have been through the Animus , the machine that reveal our hidden memories,for almost 50 times. I was the the mouse that Abstergo make their test on ,but what happened with my me, Callum Lynch, and my brother Logan ,mixed three centuries with each other.

I enter the Animus as Altär Ibn La Ahad , my ancestor; my brother was Ezio Auditore ;while Cal was Aguilar.

Errors happen 1 time in 5 years only.While we were revealing more and more memories, a storm came and attacked us while we were in the Animus.