This video is made up of 'three larger scenes' that have been cut together, and show Max getting into all kinds of ugly situations. It starts with Chloe at a Firewalk concert (Twin Peaks reference, drink!), where the player makes a bunch of decisions that I'm sure my version of Chloe never would have made. She doesn't have Max's time rewinding powers either, of course, so you're stuck with the decisions that you make.
Rachel Amber makes an appearance, too, so it looks like we'll finally get to know her properly. The game is likely to focus on her relationship with Chloe, who won't be voiced by Ashley Burch this time.
In any case, this is a fair bit of footage to go over, but be wary of spoilers if you are entirely committed to playing this.
Life is Strange: Before the Storm's first episode will be available on August 31 for PC, PS4, and Xbox One.