Yikes, but this is bleak! Many years after some disaster has struck down American civilisation, we meet a man (Viggo Mortensen) and his curious young son (Kodi Smit-McPhee) who are trying to make it from the wooded hinterland to the coast in the hope that things might be better, and hopefully warmer, there. At least the ocean ought to add a bit of blue to their remarkably dull surroundings. They do have guns, but only two bullets which he is saving for emergencies should they encounter any of the other survivors from this apocalypse who might just decide that either or both of them are fare ga...