"21 Grams" is a thought-provoking drama that intricately weaves together the lives of three individuals whose paths intersect in the wake of a tragic accident. The film follows Paul Rivers, a terminally ill professor portrayed by Sean Penn, who is grappling with his impending death and the meaning of life. His world collides with that of Jack Jordan, a reformed ex-convict played by Benicio del Toro, who struggles with his own demons and seeks redemption. Meanwhile, the story also centers on Cristina Peck, a grieving mother portrayed by Naomi Watts, whose life is shattered by the loss of her family in a hit-and-run incident.

As the narrative unfolds in a non-linear fashion, the film explores themes of love, loss, and the interconnectedness of human experiences. Each character's journey reveals the profound impact of fate and the choices we make, ultimately leading to a poignant exploration of the human condition. "21 Grams" challenges viewers to reflect on the weight of their own lives and the invisible threads that bind us all together.