One winter's day Jacob and his sister Marie are left behind in the woods by their unemployed father. In his coat Jacob finds a note from his mother urging them to go to their uncle in Spain. They arrive in Spain only to find that their uncle has died. Marie meets Diego, a rich surgeon, and falls in love with him. Diego lives with his domineering sister Teresa. Marie marries Diego. Jacob keeps jealously trying to tear his sister away from Diego. His efforts are in vain and Jacob starts to provoke Diego. It soon becomes clear that Jacob's defiance won't go unpunished.