Ba Sing Se? More like NAH Sing Se. We find our heroes in both series in the Impenetrable City! Mr. Avatar, TEAR DOWN THIS WALL!!!
ATLA Book 2 Ep 12: The Serpent’s Pass
ATLA Book 2 Ep 13: The Drill
ATLA Book 2 Ep 14: City of Walls and Secrets
Korra Book 3 Ep 3: The Earth Queen
Korra Book 3 Ep 4: In Harm’s Way
