What happens in Assassins Creed 2

Desmond is broken out of the facility.
Goes and meets up with 2 other assassins.
Goes into thier own Animus.
Play as Ezio Auditore da Firenze.
Your brothers and your father get hanged.
You become an assassin.
Become friends with Leonardo da Vinci.
Kill people.
Find apple of Eden.
Lose apple of eden.
Find it again only this time on Rome.
Fight the pope.
Meet holographic woman that talks to Desmond... end of story.