Sevanthi is daily family entertainment serial in Udaya TV. Arjun and Anuradha both are grandchildren of Pramoda Devi. The family is wanting the duo to get hitched and their closeness has generated such emotion in the hearts of family members. However, because of tragedy befell on family of Anuradha, She end up growing as Sevanthi at an Ashram (orphanage) run by Shantamurthy. The Ashram one day lands in trouble as Sakshi, hailing  from an elite family conspires to take over. To safeguard the ashram, Sevanthi approaches Arjun. The popular advocate Arjun put pre-condition of contractual marriage with her, only if Sevanthi agrees to that, he says, he will protect the Ashram. What would happen if a boy who has no belief in relationship and love marries a girl who lives breathing love and care is the knot of the tale.