Older, wiser and deadly than ever, Master Assassin Ezio Auditore embarks on an epic journey to find the lost library of Altair - a library that may hold the key to defeating the Templars for ever. However, a shocking discovery awaits him. The library holds no only a hidden knowledge but also the most unsettling secret the world has ever known.

1735 - London. Haytham Kenway has been taught to use a sword from the age he was able to hold one. When his family's house is attacked - his father murdered and his sister taken by armed men - Haytham defends his home the only way he can: he kills. With no family, he is taken in by a mysterious tutor who trains him to become a deadly killer.