Civil Wars, Part 2

"Civil Wars, Part 2" is the fourth episode of Book Two: Spirits of The Legend of Korra and the sixteenth episode of the overall series. It had aired on Nickelodeon on September 27, 2013.

Overview
Korra must fight for her parents' freedom when they are wrongfully arrested for plotting to assassinate Chief Unalaq.

Trivia

 * The dark and sinister truth of Unalaq is finally revealed, and Korra furiously breaks off all ties with him.