Thanks to Commander Guan and Doctor Sheng's brainwashing technology, all hope for a fair election in the Earth Kingdom is lost. Korra works with Toph, Su, and Kuvira to plan a means to rescue not just the brainwashed Mako, Bolin, and Asami, but everyone else caught up in Guan's plan! With the Earth Empire potentially on the rise again, Kuvira pulls another trick from her sleeve... but whose side is she truly on?