Assassins creed - Understanding

Valentina's home is destroyed at the mere age of 13. Then the first people to get to her are the Templars. They tell her about things she never believed possible. And when Templar dens start getting attacked, the assassins find Valentina. Duccio, a Templar, has been with Valentina ever since her parents died. She knows him in and out. But when Sandro appears, all of what she knew changed.