Nandini decides to move to Mumbai for the treatment of her younger brother, Rishabh and for her to study in a reputed science college. She believes her fireflies only light up when there is true love. She accidentally collides with Manik Malhotra, and unknown to Manik, he saves her jar filled with fireflies and they light up when they both touch the jar at the same time. It is then believed that there is true love between Manik and Nandini though they are both unaware of this and thus begins their story.