On the night before his marriage, a young man and his fiancee return to the castle where he grew up. Jan (Keve Hjelm) fights impotence (literal and symbolic) and anguished childhood memories. In flashbacks, it is shown that his aristocratic mother indulged in nearly every sexual perversion known to man: orgies, incest, and so on. He and his fiancee blow up the castle, and she helps him begin a more normal life. Risqué parties and daring scenes defy 1960s’ movie censorship, reaffirming the ground-breaking role of Swedish films in helping advance adult, sexually concerned themes in international cinema.