Carefree and bubbly, Meher Kaur Dhillon falls in love with Manav Sharma who dream's to become an IAS and gets pregnant with his child. Meher's mother, Kulwant Kaur Dhillon, who is sarpanch of the village, and also a very proud and arrogant woman refuses to accept financially unstable Manav and thus stabs him and throws him into a river. She forces Meher to marry Sarabjit Singh Gill, the widowed president of Amritsar, who also has a 5-year-old son Paramjit so that she could become the MLA and also ensure Meher gets married into a rich and secure family. To save her unborn child from Kulwant, Meher agrees to the marriage.
On the wedding night, Meher reveals her pregnancy to Sarab, who initially gets very upset. Meher however develops a very close bond with Param. Meher intends to leave the two and reside in Serbia with her unborn son, however, she and Sarab realize their love for each other. Sarab accepts her child. Sarab's sister, Harleen finds out the truth about Meher's pregnancy and pretends to accept it for Sarab. Meher gives birth to a son, Karanjit Singh Gill. Harleen and Sarab's half-sister, Aditi, come into Sarab and Meher's life, along with her fiance Vikram (who turns out to be Manav itself). Many trials and tribulations occur, including the fight over Karan's custody, nonetheless, everything is sorted out in the end. Aditi and Manav fall in love and marry and Karan remains with Sarab and Meher. Later on, Meher is jailed for the allegation of murdering her brother Jagga and Sarab fails to save her.
5 years later
After completing her sentence, Meher resides in Kashmir with her daughter, Seher. Sarab, Karan and Param return to India from abroad and meet them unexpectedly. Later, it is revealed that the Gills' accountant, Tarkash killed Jagga to get some past revenge from Meher and gets jailed. Sarab reconciles with Meher, and also accepts Seher. He also unites Meher with her living father, Trilochan Singh Dhillon, who Meher thought was dead all these years. However sadly later, Sarab and Meher both die in a car accident.
16 years later
Param, Karan and Seher are grown up. Seher bestfriends Rajveer Singh Babbar, who immediately falls in love with her. However, Seher is already engaged to her lover, Kunal Malhotra, who is later killed by Rajveer's CM sister, Harshdeep. Finally, Seher and Rajveer marry and soon fall in love. Rajveer leaves Harshdeep upon knowing she killed Kunal, and moves to the Gill mansion. It is revealed that Seher's cousin, Khushi Bajwa loved Rajveer and also had a 4-year-old child named Prince whose real father is her friend Avinash Gupta. After Khushi leaves, Seher and Rajveer adopt Prince.
Kulwant reveals to Seher about her illegitimate granddaughter, Mannat Kaur who was left by her due to social fear. Grown up, she now lives in Dalhousie with her mother Harnoor, who later dies after revealing to Mannat about Dhillons. Seher decides to get Mannat back. Mannat comes across Dolly's grandson, Zorawar Singh Randhawa in Dalhousie, and then arrives in Attari to live with Gills and Dhillons, hiding her identity. Later, Kulwant finds Mannat's truth and reunites with her. Eventually, Seher and others too find that Mannat is Bittu and Harnoor's daughter.
Later, Zorawar and Mannat falls in love with each other. However, Kulwant decides to get Mannat married to Nirvair and Dolly decides to get Zorawar married to Scarlet. However, Kulwant later gives in to Mannat's demands and gets her married to Zorawar. The family comes together and clicks a family photo alongside the portrait of Sarab and Meher while Choti Sarrdaarni comes to an end.
