After 13 years, Avatar: The Way of Water is finally hitting cinemas. Here's what you need to know

In 2009, director James Cameron introduced us to the world of Avatar.

The film, which was praised for its groundbreaking use of visual effects, and tops IMDB's Box Office Mojo list of the highest-grossing films of all time (unless you adjust for inflation, in which case Gone With The Wind tops that list, with Avatar coming in 15th).

Now Cameron is back with the film's sequel, Avatar: The Way of Water, the second of a planned five films set in the Avatar universe.