Enter Route 5 and follow the road west. You should see a musician and his lute along the north edge of the road to the west of the trailer. Move over and talk to him. Although he wasn't willing to battle before, he is now!
Trainer Battle: Musician
Remember that guy from Black and White? Turns out his been chilling around here for the past two years... who knew? The guy will reward you with an Electric Guitar for beating him. Cool, that's the first prop you've found. You can use that in Pokemon Musicals.
Go west, over to the crowd surrounding the Motorcyclist. Feel free to talk to him; he'll challenge you to a battle. Answer 'Yes' to get into what is your first Triple Battle if you're playing Pokemon White Version 2, or your first Rotation Battle if you're playing Pokemon Black Version 2.
This battle's actually decently hard, so don't totally drop your guard.
Triple/Rotation Battle: Motorcyclist
After defeating Charles he'll speed off. Everyone will cheer you on for teaching him a lesson then the crowd will fully disperse. Continue left and move up the steps to the Driftveil Drawbridge.
There isn't a whole lot to do here. There are a grand total of three people to talk to (a man, a woman and a Youngster), as well as one Pokemon to catch and some items to collect. Walk along the bridge, speaking to the three people.
You will notice small, swaying shadows appearing. When you move onto them, one of two things will happen. The first is a random Wing item, which you will place in your bag. These can be one of a number of wings: the Clever Wing, Genius Wing, Health Wing, Muscle Wing, Resist Wing, Swift Wing or Pretty Wing.
All of these wings, with the exception of the Pretty Wing which is only useful by selling it for money, are used to increase EVs . If you don't know what these are, just know that they increase Pokemon's stats as they Level Up. If you do know what EVs are, check what each wing does and feel free to use them to your liking.
The second thing that can happen is that the shadow is a Ducklett , a bird Pokemon. If it is, you'll engage in a battle with it. If you want, battle and catch it. Besides this, there's nothing else to do. Continue along to the end of the bridge and move down the steps into Driftveil City.