Has been a long wait since we last watched the season one finale of the hit Nickelodeon TV series, The Legend Of Korra, a spin-off of the widely popular The Last Airbender animated series. The wait is now over. Legend Of Korra: Book 2 Spirits will be airing tonight a one hour season premiere special at 7pm on Nickelodeon (check your local listings). What was first a mini-series, has now been fully extended into a complete 4 seasons and 52 episodes. Be sure to check out the final premiere trailer and let us know what you think after the special tonight!