A large crowd congratulates lawyer Inder Lal Parihaar after winning a case. He returns home, grabs wine, and walks to a tree as a flashback begins.
Saraswati “Saru” Parthasaarthy, a traditional Telugu librarian, is rejected by suitors who find her old-fashioned. Her sister Kaveri’s wedding is postponed until Saru marries. When Kaveri threatens to elope, Saru promises to find a husband soon. Inder Lal Parihaar, an ex-convict known for his tough attitude, moved in the same building. The original owner, Lily, had transferred ownership to Inder. Inder immediately fell for Saru. He breaks up with his girlfriend, Ruby Malhotra. Saru and Inder meet in the elevator by accident and later at the library where Saru works. At the library, Inder tried to pass written messages to Saru multiple times, but she overlooked them all the time.
Saru secretly meets Inder to get a makeover from Ruby, hoping to impress her colleague Abhimanyu. A drunk Ruby barges in, misunderstands the situation, and throws a wine bottle at Saru. Inder shields Saru and gets injured. As they leave for treatment, the security guard sees them and assumes they’re intimate, alerting the neighbors. Saru tends to Inder’s wounds. Later, Jayram (Saru’s father) and neighbors find Saru in Inder’s bed, misinterpreting the scene. Jayram, embarrassed, disowns Saru. Saru confides in her mother but asks her to keep it secret for Kaveri’s marriage’s sake.
Inder helps Saru find a new apartment and get a makeover, attracting Abhimanyu’s attention. Inder remains silent when Abhimanyu proposes. On the wedding day, Abhimanyu rejects Saru due to family pressure, leaving her devastated. She spends the night with Inder. The next morning, Inder sees Saru with Abhimanyu through the window and, feeling depressed, breaks off contact with her. Later, after learning from Abhimanyu that Saru rejected him that morning, Inder tracks her down at a monastery and confesses his love. Saru faints; at the hospital, Inder learns she has terminal meningioma. He confronts her parents and is arrested.
After being discharged, Saru discovers Inder’s love through messages he left at the library. They reunite, and Saru proposes marriage. That night, Saru tells Inder that after her death, she wishes to be buried under a beautiful flowering tree. Inder meets Jayram and tells him that he is marrying Saru and would even die for her. On their wedding day, Saru’s parents arrive and give their blessing. Saru faints after the wedding and is hospitalized. Her parents learn about her illness, and Jayram feels heartbroken and guilty.
Inder asks his father, Rajinder Lal Parihar, with whom he has had a strained relationship since his conviction, for a piece of land under the tree. However, instead of granting his request, Rajinder responds with hurtful words, leading to a small argument between them. While in the hospital with Saru, Inder confesses that his nanny, Lily, who had raised him as her son, killed his uncle when the uncle tried to force himself upon her. Inder took the blame for the crime. Saru helped Inder value his relationship with his father. Later, Saru dies in Inder’s arms, leaving him devastated. Inder finds Rajinder in the hospital and reconciles with him, thanks to a conversation he had with Saru.
The story returns to the present with Inder, now a successful lawyer, visiting Saru’s grave (the tree) and expressing his eternal love to her. If you want to experience the timeless tale of Sanam Teri Kasam, don’t miss the opportunity to watch online and witness the power of true love.