In 1938 England, a suburban housewife and a doctor meet by chance at a train station when he removes a piece of grit from her eye. This marks the beginning of a profoundly emotional and complex friendship. Despite both being married, they continue to meet every Thursday in a café, sharing conversations that quickly evolve into a deep, mutual affection. Their meetings are characterized by a sense of escape from the mundane realities of their respective lives, offering them a brief respite in a world that seems far removed from their everyday existence.

As their relationship deepens, they are forced to confront the moral implications of their feelings for each other. The intense connection they share brings them to a crossroads, challenging their personal values and societal norms. They grapple with the consequences of pursuing a future together versus the responsibilities and commitments to their families. Through their encounters, the film explores themes of love, fidelity, and the complexities of human emotions, set against the backdrop of pre-war England. Their personal dilemma is portrayed with sensitivity and realism, highlighting the struggle between passion and duty.