The lives of three people are affected following a hit-and-run traffic accident.
The fragmented narrative might not be to everyone's taste, with the jigsaw of scenes shown in a random order (the director mentions in DVD commentary that they are shown in the order of emotional power), but after you get through the first 20 minutes you get a grasp on what's happening you get to enjoy a dramatic, well-acted thriller. Naomi Watts, Sean Penn & Benicio del Toro all deliver tour de force performances and Alejandro Gonzalez Inarritu proved that, as a director, he could mix it up amongst the Hollywood heavyweights.
A clever and emotional piece of work.