No is a novel and its plot pivots around a powerful theme- the moral triumph of having the courage to say 'no' at the right moment. It shows how the central character of the fiction, Ruba, a young woman from a mofussil struggles hard through innumerous odds and obstacles to build her career in Dhaka and charts her own path with optimism, dignity, and unwavering determination. She lives in a female hostel in the city. She always maintains a good but friendly relation with her three roommates, Simi, Mani, and Sania. Ruba and Robin love each other deeply. Yet their relationship falters when doubt creeps in- born of Ruba's closeness with her male office boss and Robin's unintended connection with a teenage girl. What makes the novel remarkable is the seamless interweaving of its plots, guiding readers through a subtle psychoanalytic journey- the journey that compels self-reflection, awakens conscience, and inspires moral awareness against corruption and degradation of social values.