Thulasi movie is the dubbed version of telugu film as the same title. Thulasi Ram alias Thulasi (Venkatesh) loves and marries Vasundhara (Nayantara). Hailing from faction-ridden Palnad area, Venkatesh family is horn-locked with the villainous headman (Jayaprakash Reddy).
In the civic elections, Tulasi enters into a tug of war with the villain and takes up hectic campaign to see the win of his father (Vijay Kumar) and he does it. Raging with grudge, the villain sends his henchmen to kill Tulasi and in the clash, Vasundhara's brother (Sivaji) is killed.
From then onwards, Vasundhara starts fearing the faction politics. She gets separated from Tulasi, taking away their little son Harsha (Athulith). Now, it is the turn of Tulasi to rescue his wife and Harsha who suffers from a cerebral problem, which his wife doesn't know.
In the end, Tulasi successfully knocks down his enemies and his son is also saved after a successful operation.