Desmond Miles is an assassin.
Well, not yet, but he will be soon.
The events that take place while inside the Animus will make him a skilled and knowledgeable assassin by the end of Assassin's Creed 2.
From the very start of the game AC2 is bigger and better in every single way from the first title. Picking up close to the ending of the first Assassin's Creed, you'll escape the Templar stronghold and soon step into the boots of Ezio Auditore da Firenze.
Renaissance Italy is a beautiful place full of plot twists, pulse pounding chases across roof-tops, sword fights, hidden blades, surprise allies, and all encompassing conspiracy theories.