Three women, a Dane, a Norwegian and a Swede, are suffering in their marriages to cruel or abusive husbands. Together, the three couples take a trip to the cabin belonging to one of the couples, and as the men, who are also business colleagues, depart the dock for a fishing trip, their boat explodes as their wives look on. A detective assigned to the case follows the women back home, where the three now merrier widows make a stunning discovery. Meanwhile, another colleague of the victims menaces the wives.