Suhaagan is a story about two sisters Janaki ( Sridevi ) and Jyoti ( Padmini Kohlapure ) who live with their Parents Jamnadas ( Pran ) and their mother played by Tanuja. Ramu( Jeetendra) lives in the same village and makes living by farming. Ramu loves Janaki but Janaki is not that interested in Ramu because she is more attracted to Murli ( Played by ?) who is much more wealthy than Ramu. Jamnadas prefers Ramu as being Janaki's husband because he thinks he is a good person and will not ask for big dowry. Janaki get married to Ramu and that is when all the trouble starts. Janaki is not at all comfortable at Ramu's household because he cannot provide the comforts she is looking for. Things get even worse after the birth of their first child and to make the long story short, Janaki walks away from Ramu to live with Murli. Ramu eventually married her younger sister Jyoti and Jyoti takes care of Janki's baby daughter. But conscience hit her hard specially when her old school teacher scolder her for leaving her husband and child. Watch what happens next for Janaki and how the story unfolds when it became clear to her that she cannot make a household with Murli.