Betting Raj is a 'basthi' guy who makes his living by accepting challenges for money. He lives along with his adopted parents and enjoys his life. Tragedy strikes the family in the form of a medical emergency and Raj needs 20 lakhs to save his father. As he is on the lookout for money, he is approached by James with a challenge.
James dares Raj to seduce Chaitra, the daughter of powerful mining Don Ballary. A desperate Raj takes up the challenge and begins wooing Chaitra. As time goes by, Chaitra too reciprocates the love and Raj wins his bet. But as it turns out, Chaitra has a secret and Raj has a flashback that he is not aware of.
As the story begins to unfold, Raj realizes that he has a mission to fulfill and a promise to keep. What is that promise and what is Chaitra's secret? That forms the rest of the story.