Season 0 of The Legend of Korra premiered on 2013-08-09.

Book One: Air

8.1

.

2012

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12 Episodes

In Book One, Avatar Korra—a headstrong, rebellious, feisty young woman who continually challenges and breaks with tradition—sets out on her quest to become a fully realized Avatar, struggling to find balance between tradition and modernity, the bending and non-bending world, and within herself.

Book Two: Spirits

8.3

.

2013

.

14 Episodes

In Book Two, the Spirit and Human worlds are colliding and Team Avatar must embark on a journey diving deep into the mythology of the mystical Spirit World, encountering creatures like nothing they've seen before, and discovering the truth about the very first Avatar!

Book Three: Change

8.3

.

2014

.

13 Episodes

Set two weeks after the end of Book Two, Book Three finds Korra discovering that new Airbenders are popping up all over the Earth Kingdom. While she tries to find these Airbenders and rebuild the Air Nation, a group of dangerous criminals embark on a mission of their own.

Book Four: Balance

8

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2014

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13 Episodes

Book Four is set three years after Book Three. Now broken and bruised, Korra begins a journey of self-discovery and survival as the strong prey upon the weak. When an aggressive military force rises up led by the power-hungry Kuvira, the fate of the Earth Kingdom hangs in the balance and only the Avatar can set things right.