Ángel is a writer going through a crisis. On his way home, he runs over Sofía then flees the scene. Guilt-ridden, he decides to go back to the site of the accident to find out if the victim is dead.
As Sofía hovers between life and death deep in a coma, Ángel orchestrates a risky lie about his identity that allows him to insert himself into the victim's world and get to know her peculiar family. The protagonist becomes indispensable for all the members of her family, who consider him her guardian angel, believing as they do that he saved her from the clutches of a killer who was pursuing her because of her research into police abuses on the border with Morocco. But only the young man knows the truth.