The wait is over, Avatar fans, as we've got a first trailer for Avatar: Fire and Ash, which is the third movie in James Cameron's sci-fi franchise and is set to be one of this year's biggest new movies.

We see two new Na'vi tribes in the trailer: the Wind Traders and the Ash People clan, the latter of whom seem to represent most of the menace in the film. We see the Ash People using fire as a weapon, with one of the aliens even seeming to be able to wield it on her bare hands without hurting herself.

Jake Sully (Sam Worthington), Na’vi warrior Neytiri (Zoe Saldaña) and their family return for the third pic, which also stars Sigourney Weaver, Stephen Lang, Oona Chaplin, Cliff Curtis, Britain Dalton, Trinity Bliss, Jack Champion, Bailey Bass and Kate Winslet.