Subbu is an action romance based movie in which, Bala Subramanyam alias Subbu (NTR) is a college student and Neeraja (Sonali Joshi) is a Good Samaritan who keeps on donating money anonymously to fund 25 seats in the college in which Subbu is studying.
Subbu is curious to know about the person who is donating that money. Subbu falls in love with Neeraja, mainly for her positive attitude. There is a strong reason for Neeraja to donate money to the college. There is a stronger reason for Subbu to become a cool-headed guy.
In the flashback, Subbu rescues a girl who met with an accident and admits her in a hospital. She is a daughter of a rich industrialist GK Chowdary. Neeraja is the younger sister of the girl whom Subbu rescues. rest of the story is about when would Neeraja realizes the truth.