An egocentric artillery captain and his venomous wife engage in savage unremitting battles in their isolated island fortress of the coast of Sweden at the turn of the century. Alice, a former actress who sacrificed her career for secluded military life with Edgar, reveals on the occasion of their 25th wedding anniversary, the veritable hell their marriage has been. Edgar, an aging schizoid who refuses to acknowledge his severe illness, struggles to sustain his ferocity and arrogance with an animal disregard for other people.

Encerrados en su fortaleza aislada situada en una isla, un anciano capitán de artillería psicótico y su amargada esposa se enzarzan en una serie de discusiones que amenazan con desembocar en la violencia.