Korra is the new Avatar, but already in her late teens, she is unable to airbend. Additionally, she is fiesty and impulsive, and out of tune with her spiritual side.
In order to help continue her training, she travels to Republic City - a place established by Avatar Ang - only to find herself plunged into developing civil war, driven by the Equalists, who want an end to all benders...
The Legend of Korra is set around 60 years after the events of Avatar: The Last Airbender. It's produced by the same people, so expectations were high.
The first shock is how technology has progressed so quickly, resulting in a clear 1920's vibe with a hint of steampunk.
The second shock is that the main characters are children of the original airbender characters - some of whom, not least Kitara, are still alive. Others are seen as adults in flashbacks that Korra experiences. Which is both strange yet exciting to see.
The Legend of Korra doesn't try to push the envelope so much as Avatar: The Last Airbender did, but there's still a focus on strong female characters, and an Asian-styled setting.
What is significantly different is this is more aimed at a Young Adult audience than for younger children, so romantic relationships between the characters are much more of a feature.
It's difficult to say much without giving out spoilers, suffice to say the characters, plot, and animation are all superb.
The shame is that it'll be looked-down upon by comparison to live-action programs - even though standards in The Legend of Korra are so high.
An animated show it may be, but it's still one of the best shows to have been on TV in the past few years. Definitely worth watching - but make sure you watch Avatar: The Last Airbender first to get the most out of it.