an endlessly desolate sand , one carrying four speed of the car of a young man because gallop off a sky of the sand ... we see is not spring break , a few people to make their own arrangements entertainment , they need to face all that people feel less happy , because they are trying to flee the coming of the end of the world , racing against time to save their own lives before they left behind , is a deadly virus is being spread rapidly in a can not resist the progress of with . In order to avoid this disaster , Danny ( Lou Taylor Pucci ornaments ) and his brother Brian ( Chris Pine ornaments ) , Danny 's girlfriend Bobby ( Piper Pei Labo ornaments ) and his school a good friend , Kate ( Emily Wan Cape , ornaments), four young people to drive with the fastest speed through the desert of the southwestern United States , they are looking for is a relatively safe place , but spend the whole time , they realize that perhaps the huge country no longer available to their place to go . Not only is the virus rampant oppression of everyone's nerves, they also constantly forced to face the ethical aspects of decisions and challenges created by the pressure - are that they can not imagine the difficulty and humanity choice . Soon, they found that the original blocking the biggest enemy in front of them , not continue to attack and defeat the deadly bacteria or viruses of human , but hidden in the dark and evil of their hearts .