How to get out of Nimbasa City

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I just defeated the 4th Gym Leader in Pokemon Black 2, and I want to head out towards the 5th Gym. But when I go to Route 5 there are trainers who are battling, so I can't get past. The other way (Route 16), the elevator is broken.

How can I escape Nimbasa City?

Best Answer

After you beat the Gym Leader at Nimbasa City, head to the Northwest section of the city to find 3 Team Plasma Grunts and your Rival. You help your rival beat the Members of Team Plasma, then Route 5 Will open up.