The narrator sits alone in a quiet room, preparing to review work papers to earn money for his waiting aunt, when a mysterious, pure song draws his attention. Discovering a hole in the wall near the ceiling above a condemned door, he climbs onto his bed and looks through into the adjacent, completely empty room. He watches as a maid enters the room alone, illuminated by the fading evening light, holding and kissing a white letter from a loved one. Witnessing this intimate act deeply moves the narrator, making him feel intimately connected to her hidden emotional world.
Later, the narrator descends to a brightly lit dining room to join other guests at the table. Surrounded by glittering jewellery, sparkling lights, and polite conversation, he feels isolated from the masked social facade of the people around him. However, as the conversation touches on money, military heroes, and the afterlife, sudden flashes of genuine desire and emotion reveal themselves briefly in the guests' eyes and expressions. He observes a moment of silent connection between two distant diners discussing death, realizing that true feelings occasionally break through their polite exteriors.
After dinner, the guests gather in the salon where an attorney calmly recounts a horrifying crime involving a brutal murder. As the shocking details unfold, the narrator watches the horrified yet fascinated reactions of the listeners, noting how the gruesome story strips away their refined manners to expose raw, hidden instincts. Deeply disturbed and fascinated by this glimpse into human nature, the narrator hurries back to his room. He presses eagerly against the wall, gazing once more through the opening into the neighboring space, finding it far more real and alive than the masked society he has left behind.