Warming up fans for the final season's release date, Nick.com has just released the offical trailer of 'The Legend of Korra Book 4: Balance,' and it appears to be a rightful conclusion to a mega-hit series.

"There would be no air nation without Avatar Korra. She opened the portals and somehow the world began anew for us. She was even willing to lay down her own life in order to protect ours," the introduction of the video proclaims.

Set three years after the culmination of the third installment of 'The Legend of Korra,' the action-packed twists and turns will be the exclamation point of the series.

Many fans are also excited for the return of the famous 'Avatar: The Last Airbender.'

There are also major hints that Captain Kuriva, which was introduced in the third book and voiced by Zelda Williams, will be one of the super villains in 'The Legend of Korra' Book 4. Fans of the metalbender will jump for joy as Captain Kuriva likely suits up for a key role this season.

However, voice actor Daniel Dae Kim has also confirmed that his character Hiroshi Sato will be back for the final leg of The Legend of Korra. Hiroshi Sato is one of the most prominent nonbending leaders that engineered weapons to wage war against the benders.

This is going to be the final season of the well-loved series that has carved a new generation of television genre.

'The Legend of Korra Book 4: Balance' premiere will air via Nick.com and the Nick app, available on Android, iOS and Windows Phone, on Friday, Oct. 3.

Watch the official 'The Legend of Korra' Book 4 trailer below.