First Round Battle at Nimbasa City! is the thirty-seventh chapter in the Pokemon Battle Adventures Black and White storyline.
- Hayden and friends arrive at Nimbasa City.
- Hayden enters the Nimbasa Battle Tournament along with Flint, Chad, Bianca, Dani, and Cheren who are also competing.
- Hayden defeats Dani and enters the second round.
- Cheren has a battle with Bianca and wins.