A laughably shallow light comedy about two ditsy teenage girls as they wake up following an apocalyptic event, i.e. the returning comet that killed off the dinosaurs 65 million years ago... None of the concepts were well thought out or portrayed: One girl survives in a steel lined building (Okay, a little bit), the other girl survives in a simple tool shed, and a couple survive in the cab of a truck... As lightly protected as they were, literally 10's of millions of Americans would have also survived (Jobs, lifestyles, chance, coincident...). The one girl, all 100 pounds of her, beats off a huge black, male, zombie early on; they are attacked by four armed men and, one girl is unarmed, they kill the four attackers; the 'experts' in a sealed lab 'forget' to shut off the 'ventilation' and are exposed to air (as were all the above mentioned people), etc. NOT family friendly or socially redeeming: both girls are into casual sexual intercourse with friends, out of boredom, one night stands, etc... I did take exception to hollywood's divisive push of age warfare onto children as all the adults are portrayed as simpletons, self-serving, and willing to sacrifice the children for the adult's benefit but the kids are more intelligent and capable... If really bored and want your intelligence insulted watch it, otherwise pass on this one, and saved 95 minutes of your life that you won't get back...