Don't believe us? Hit the break.
Last one at the end. Boom. Watch the other two as well, though. Obviously.
The first movie shows Ezio literally getting a rude awakening, while the second sees him on his horse riding through town while your villa from Assassin's Creed II is being destroyed by invading forces.
The last one shows some swordplay featuring Ezio and enemy soldiers.
Get them all at the links above at GameSpot. Mind-pumpingly great, innit.
Assassin's Creed: Brotherhood releases on November 16 in the US and November 19 in the UK for PS3, 360 and PC before the series takes a year-long break.