The film takes place in Hong Kong, 1962. Chow Mo Wan, a journalist, rents a room in an apartment of a building on the same day as So Lai Zhen, a secretary from a shipping company. They become next-door neighbors. Each has a spouse who works and often leaves them alone on overtime shifts. Despite the presence of a friendly Shanghainese landlady, Mrs. Suen, and bustling, mahjong-playing neighbours, Chow and So often find themselves alone in their rooms. Their lives continue to intersect in everyday situations: a recurring motif in this film is the loneliness of eating alone, and the film documents the leads' chance encounters, each making their individual trek to the street noodle stall. Chow and So each nurse suspicions about their own spouse's fidelity; each comes to the conclusion that their spouses have been seeing each other. So wonders aloud how their spouse's affair might have begun, and together, So and Chow re-enact what they imagine might have happened. (Source: Wikipedia)