BW049: Crisis from the Underground Up!

Episode Plot
Ash and co. finally arrive at Nimbasa City, where Ash hopes to get his fourth badge. Cilan is happy as a kid in a candy store to be on a subway, and as they were riding, they suddenly stop. They meet Ingo and Emmet, the Subway Masters of the Battle Subway. Plus, Meowth's plan had come to fruition, but what is it?