Parijatham tells the story of Seethamma (Seetha) who is a wealthy lady comes to her hometown after a long time. She find a perfect bride for her son Surender (Prithviraj). Sumathi (Saranya) who is the daughter of a millionaire merchant called Textile Subramaniam (Sarath Babu). He was the previous owner of the bungalow in which Seethamma lives now.
Seethamma fantasizes about Sumathi as her own daughter-in-law. Her opinion gradually matures and she decides to get Sumathi married to her son. She tells her son that she has found the right girl for him. But Sumathi's dream turns topsy-turvy, when Seethamma passes away suddenly.
Surender and his father come to the town and goes on a search to find the girl that Seethamma has fixed for her son. To fulfill his mother's last wish, Surender is determined to marry only the girl that his mother has seen for him.
Sampoornam (K.Bhagyaraj) comes to Seethamma's house as a relative, and helps Surender identify the girl that Seethamma has fixed for him. How does he find out is told lucidly in the remaining part of the movie.