A happily married couple discovers just what kind of lasting implications a simple conversation can have after brining up a taboo subject over dinner with friends and discovering a division they never knew existed. Lars and Susanna have been married for years, yet their love today is as strong as it was the first day they locked eyes.
They both have great jobs, drive nice cars, and share a spacious home with their teenage daughter - who is about to strike out on her own. Susanna's friends Ann and Ulf serve as almost a mirror image of herself and her husband; both are highly intelligent, financially secure, and extremely well spoken.
One night, as the two couples sit down for dinner together, Susanna steers the conversation towards the affairs of a close colleague. Much to Susanna's surprise, the topic elicits fierce reactions from her dining partners.
As the debate about the subject grows increasingly passionate, fundamental splits are revealed that may run too far and too deep to mend. Could it be that the future relationships between these longtime friends - and perhaps even the couples themselves - have finally reached the breaking point after so many years of contentment and joy?