Anita, a middle-aged, upper middle-class woman, has just taken a temporary job at a high school in an affluent suburb of Oslo - mostly out of boredom in her childless marriage to a busy, inattentive lawyer. She is caught completely off-guard when Markus, one of her students, pursues her sexually, and in a moment of vulnerability, Anita gives in to him. For Markus, it is a casual one-time conquest to fulfill his curiosity of sex with an older woman. But for Anita, it triggers a romantic obsession and a quest for a furtive relationship with Markus, who is now the one bewildered by her attentions. A mid-life crisis such as Anita’s has rarely been captured with the degree of emotional incisiveness of Henrik Martin Dahlsbakken’s new film. An Affair explores the degree to which unfulfilled sexual need - and inability to even speak it - has the capacity to destroy.