Still, it's understandable if you're in need of a refresher about that past, present and future of Cameron's corner of the galaxy. Here's everything you need to know about Fire and Ash before you catch the trailer in theaters.

Avatar: Fire And Ash sees Jake (Worthington) and Neytiri’s (Saldaña) family grappling with grief in the wake of the death of son Neteyam (Jamie Flatters) as conflict between the RDA and the Pandorans escalates after the Na’vi and Metikayina clan’s hard-won victory at the end of Avatar: The Way of Water.

Box-office sensation "Avatar" is back with a third movie this December, teasing epic family drama and stunning new creatures in the first trailer.