What is this game's premise?

The characters have been given a charter to explore the wilderness and establish a colony.

What will players be doing?

Players will primarily be exploring the setting during the first part of the game.  Before too long establishing and growing a colony will become important.  There are elements of planning and building games here.  Later in the adventure path the characters might even engage in army building and mass combat.

What will characters be doing?

A lot.  There is a good mix of wilderness, dungeon and city adventuring to be had.  Primarily they are doing this in order to establish a new kingdom.

What style of game is this?

Kingmaker is a sandbox.  While the GM has some plot elements that will make it into the game, he isn't primarily responsible for the game's direction.  Players must be proactive.  They decide what gets explored and what gets ignored.  Players who wait around for the GM to push plot points will be very bored.