Kasamm- Tere Pyaar Ki, is popular romantic as well as family drama which involves the concept of reincarnation. Ekta Kapoor and her mother Shobha Kapoor are financing the show under their home banner Balaji Telefilms for Colors. Early on, the serial introduces us to a young girl named Tanushree Khurana. She resides in the city of Patiala. Her family and friends call her Tanu. A guy named Rishi Singh Bedi is her best friend. A few days later, Rishi gets into a life threatening danger, and Tanu saves him.
A saint named Katyayani Bai makes a prediction that they both are prefect partners for each other, and as long as she is with Rishi, he will be safe. The forecast doesn't go down well with Rishi's mother Rani, as she isn't too fond of her family due to their financial condition. Somehow she manages to convince her husband to leave the country and settle in America. The story then shifts to a time after seventeen years from this day. Rishi's father decides to return to India.
Rishi protests but his father blackmail him, and his mother and they come back to their native country. Back in India, Tanu is anxious and excited to meet Rishi. He, on another hand, has become averse to the idea of love and flirts with many girls. The day they land at Patiala, Tanu loses her parents to a terrorist attack. Raj, Rishi's father, is heartbroken since Tanu's male parent is his friend. Tanu's aunt, Bani, tells all of them to shift to Mumbai where she lives with her two daughters. Neha is her elder daughter while Swati is the younger one.
Bani wants Rishi to marry Neha because he is rich. She tells Raj that Neha is Tanu and hence he decides to get Rishi engaged to Neha. Meanwhile, Rishi meets the real Tanu and instantly falls in love with her without the knowledge that she is his childhood sweetheart. However, after exchanging rings, Rishi comes to know about Bani's lie. Tanu is initially disgusted with Rishi due to his attitude towards the girls, but she too falls in love with him. But since he is married to her cousin she doesn't reveal her feelings to anyone.
Due to some tricky situations, Tanu dies. The plot then takes a leap of twenty years. Rishi is saddened due to Tami's death. Tanu takes rebirth as Tanuja Vikram Sikand. Will Rishi move on and find a suitable partner for himself? Will Rishi recognize that Tanuja is her real love and will their love story materialize? The audiences will receive the answers to all the above questions when they see the program. Sharad Malhotra and Kratika Sengar play Rishi and Tanu respectively. Their chemistry made the people fall in love with the couple. The makers had roped in Shivani Tomar to play Tanuja, but due to the viewer's demand they dropped her after one month and called Kratika back. The show is currently running on Colors Channel.