: Korra and her team discover that the Earth Queen has been illegally capturing new airbenders to form a secret "Airbrow" army. They plan and execute a daring prison break from an underground facility in Ba Sing Se.
: Following the rescue, Korra is officially banished from the Earth Kingdom by the Queen. Key Revelations [S3E4] In Harm's Way
: The audience learns that Zaheer’s group was originally imprisoned for attempting to kidnap Korra thirteen years prior, though their exact motivations remain a mystery at this point. : Korra and her team discover that the