This movie started off decently but quickly left reality and all logic. At the end all you have is a mom and her two kids with the rest of the world dead. This movie was so bad no one should have lived. Some how the mom survived simply because she loved her kids. I guess there were no other good mothers on the entire planet. Such a bad film. Do not waste any time watching it. This same mom would sacrifice the entire world for her daughter. The motivations can't be understood for any of the characters.