On the contrary, in this movie Nathan and Sulli seem to be of the same age, Sulli is so young in this movie. 

Chloe for sure will appear in this movie but Elina will not appear on the screen. You might be puzzled about who they are? These 2 characters are from the game of uncharted lost legacy. 

Nearly this movie is based on Uncharted 3,4 video game and also opening shot Nathan and Chloe are searching for something. There are so many diamonds in the ground, leaving all of the diamonds and taking a map and they are trying to find a treasure.

 Sulli says the value of the treasure is 5 billion dollars and Nathan's origin is a slightly different story from the game. 

Sulli already knows Nathan because Sulli and sam had worked together already. sam is Nathan's brother, Sulli said " if you find the treasure you will get Sam". 

So we can understand that sam has left many clues with Sulli but we don't know who is in sam's casting. Some places from the game and there is a cross symbol it has many links with this movie.

There are so many stunts copied from the game. Also, they have released uncharted 1,2 in a tamil movie the movie name is Indrajit and the budget of the 142 million dollars also they are gone released a mixed remastered game in PS4, PS5.