Korra struggles to find a deeper connection with the Spirit World as she and the gang attend a Southern Water Tribe festival.

Korra and Chief Unalaq journey into a dangerous maelstrom and find a source of great spiritual power.

While tensions flare between the Northern and Southern Water Tribes, Korra struggles to remain neutral.

When Korra's parents are wrongfully arrested, Korra fights for their freedom.

When President Raiko is attacked, Bolin saves the day.

Korra and company attempt to close the spirit portals before Harmonic Convergence.

Team Avatar arrives in Ba Sing Se. While Korra has an audience with the Earth Queen, the others notice that Kai has gone missing, prompting Mako and Bolin to go look for him. They track him down, but he manages to shake them in the monorail, which takes the brothers to the Lower Ring, where they eventually run into their family from their father's side. Meanwhile, Korra and Asami set course for a small village to collect taxes as a favor to the Queen. After getting her money, the Queen brushes off Korra's request for help in tracking down the airbenders, leaving the Avatar to storm out of the palace. In the city, Kai found himself arrested by the Dai Li and subsequently conscripted in the Earth Queen's first airbending regiment.

Lord Zuko, Tonraq, Desna, and Eska try to prevent Zaheer from freeing the last prisoner, P'Li, while Korra discovers that the Earth Queen is forcing all the airbenders in Ba Sing Se to join her army. Team Avatar thus devises a plan to free them from the monarch's captivity.

Korra and Asami are stranded in the desert. The members of The Red Lotus negotiate with the Earth Queen.

Mako and Bolin deliver an ominous message from Zaheer.

When other plans fail, Korra suggests a brave idea to take on the Red Lotus and save the Air Nation.

Korra battles Zaheer, while Bolin and Mako duel Ghazan and Ming-Hua. The captive members of the Air Nation escape and band together to help Korra.

It's been three years since Zaheer poisoned Korra and the members of Team Avatar have moved on with their lives; Kai and Opal help a struggling Earth Kingdom town.

Korra's three-year journey of healing takes her to unexpected places.