Korra discovers a way she may be able to defeat the ultimate dark spirit and save the world.

Korra discovers a new twist in Unalaq's evil plan. Meanwhile, Tenzin realizes he must face his own demons in order to save his daughter.

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

When President Raiko is attacked, Bolin saves the day.

Korra enters the Spirit World and struggles with the Avatar's relationship with the spirits.

Korra seeks Tenzin's help to enter the Spirit World for the first time.

Korra delves deeper into the Avatar's past and realizes what she must do in order to restore balance between the physical and spirit worlds.

Korra learns about the epic and mythic origins of the first Avatar.

When Triad activity threatens to put Future Industries out of business, Mako performs an investigation and discovers a much bigger conspiracy.

When the President of the United Republic refuses to help Korra, she decides to take matters into her own hands.

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

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

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

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