Paris, 1960s. After finding out that his father has accepted a promotion in Aubagne, in the south of France, Nicolas, determined not to leave his group of friends, comes up with a plan. He and his friends are going to find a mysterious Viking treasure that, according to a museum employee, is hidden nearby. With the money collected from this booty, which he believes to be a large sum, Nicolas is convinced that his father will give up the move, and his promotion.