The story is about Aarti, a bar-dancer and her daughter Muskaan, who faces social ostracism because of Aarti's profession and yearns to stay with her. Muskaan studies in Darjeeling; Aarti is in Kolkata. Later, Muskaan starts to live with Aarti, in her brothel. Aarti fears about Muskaan's future. Aarti is framed for a murder and is jailed. Teerath Singh aka Sir Ji and brothel owner, Tabassum ask Aarti to separate from Muskaan if she wants Muskaan to study. Unwillingly, Aarti agrees and parts ways from Muskaan.
Muskaan grows up to be timid and strong-minded, dedicated to her studies. She collides with Raunak Singh, and they fall in love and face many hurdles along the way. Aarti has lost her memory and thinks that Muskaan is still a child. Raunak turns out to be Teerath's son. Eventually, Aarti regains her memory and reunites with Muskaan. But, she dies in a bomb blast planned by Teerath. With Raunak's help, Muskaan trains to become a police officer to give Teerath his utmost punishment. Later, Raunak and Muskaan happily get married. Muskaan delivers twin daughters, but Teerath escapes with one of them, bribing the nurse to lie that baby has died. Later, Muskaan and Raunak meet with an accident and Muskaan is presumed dead.
Muskaan is alive and lives as Mira Bose in Bangladesh hiding from the police, as falsely framed for a murder, and returns to find Raunak. Teerath lives with Muskaan and Raunak's daughter, Roshni while Raunak has married a woman named Nisha to take care of his daughter, Khushi. Eventually, Muskaan and Raunak meet each other and find about Roshni. Nisha tries to separate them, but is exposed and apologises to Raunak and Muskaan. Teerath is arrested for his crimes. Finally, Muskaan and Raunak get married again and live happily ever after with Khushi and Roshni.
