The narrative follows Gwen, who undertakes deliberate experiments to provoke feeling yet finds herself emotionally numb; a near-fatal railway incident in which her husband acts to save a child exposes their growing estrangement and her bewilderment at her own indifference. Domestic scenes alternate with social encounters and artistic circles, revealing tensions between duty, aestheticism, and moral curiosity. Male characters respond with practical steadiness or artistic restlessness, while conversations and small domestic rituals highlight conflicts of passion, self-control, and societal expectation as the couple and their acquaintances negotiate intimacy, reputation, and the consequences of deliberate emotional restraint.