The trailer was good, it showed the family settling into their bunker for the night, and all was well, until this guy is getting chased by a group of people in masks, and ends up banging on the door of the fortified bunker/house. The teen daughter can’t let him die and she shuts down the security system and let’s him in. So the group chasing him decides to get into the house, and it takes off from there.
Based on all the fiction I've ever read, and on similar previous movies, the only rational thing to do before the crisis begins is to kill all teen (or younger) daughters...
Or lock them up securely (bound and gagged) in isolation the night before.