'Hurt the mother, and the son will be your lifelong enemy.' -- Old French Proverb As the years go on, when another needless tragedy hits Marian, her sixteen-year-old son, decides to wait until he is a little older before he sets out to extract vengeance on every person who has hurt or downed his poor mother. And in doing so, he displays the same determination and ruthlessness of character as his French grandmother, Jacqueline Castineau. Until he makes a flying visit to Stockholm, and meets Rena Olsson, a beautiful and enigmatic Swedish girl, who captures and softens his heart.