Square Enix released a new story trailer for Just Cause 3.Here is the story outline gave by Square-

In Just Cause 3, Rico and the rebels will be joined by other key characters in their mission to liberate the island of Medici from the clutches of the tyrannous dictator General Di Ravello. The evil D.R.M. (Di Ravello’s Military) have harnessed the power of a resource called Bavarium and are using it as both a powerful explosive and an almost unlimited energy source.

Just Cause 3 releases December 1st on PS4, Xbox One, and PC.