A suffering cancer girl Siya loves Aadhi. Their love is untold. An incident makes Siya leave Aadhi. He finds and marries Siya. The destiny again makes Siya sacrifice Aadhi forever. She intolerance's and injects high dosage of cancer pills to pass days sooner. Later, Yazini publishes a book on Siya's biography and makes Zoya Ali khan get reads and inspires. Zoya researches on Siya's life and publishes The Untold Hearts book and makes everyone astounding because every heart has a story