Nickelodeon has released the official season three trailer for their TV series Legend Of Korra. The trailer is titled ‘Book 3: Changes’, the plot shows Korra losing the link between her past Avatar lives. This causes a brigde to be left open which links the human world and the spirit world. This means that ghosts, people and other worldly creatures now co-exist. Apparently Nickoldeon released the trailer in response to someone leaking footage from season three online. Season two of the series ended with Korra destroying the spirits putting the world out of balance, the spirit of chaos and darkness. So far no broadcast date has been mentioned in regards to the start of the new season.