Video Codec : MPEG4
Video Bitrate : 448 Kbps
Audio Codec : AAC
Audio Bitrate : 64 Kbps
Paul Rivers (Sean Penn) is a mathematics professor with a fatal heart condition. Unless he receives a new heart from an organ donor, he will have less than one month to live. Paul's wife (Charlotte Gainsbourg) wants him to donate his sperm so she can have his baby, even if he dies. The two are civil to one another, yet distant.
Cristina Peck (Naomi Watts) is also a recovering drug addict, and now lives a normal suburban life with a supportive husband and two children. She is a loving mother and active swimmer, who has left her days of drugs and booze behind.
These three separate stories/characters become tied together one evening when Jack kills Cristina's husband and children in a hit-and-run accident. Her husband's heart is donated to Paul, who begins his recovery.
Cristina is devastated by the loss and returns to drugs (2CB and ketamine) and alcohol. Paul is eager to begin normal life again, but he hesitantly agrees to his wife's idea of surgery and artificial insemination as a last-ditch effort to get pregnant. During consultations with a doctor before the surgery, Paul learns that his wife had undergone an abortion after they had separated in the past. Angered, Paul ends the relationship. He becomes very inquisitive about whose heart he has. He learns from a source that the heart belonged to Cristina's husband, and begins to follow the widowed Cristina around town.
Jack is stricken with guilt following the accident. Despite his wife's protests to keep quiet and conceal his guilt, Jack tells her that his "duty is to God" and turns himself in. While incarcerated, he claims that God had betrayed him and, soon enough, loses his will to live. He tries unsuccessfully to commit suicide. He is released after Cristina declines to press charges, as she realizes that putting Jack in prison will not bring her family back. When Jack is released, he is unable to reincorporate himself into normal family life, and instead leaves home to live as a transient. He works a manual labor job and defaces his Christian tattoos with a knife.