Kalthoon Thilak

Santhanam gives the best education to his siblings and takes care of all their basic needs. However, when they become financially stable they ill-treat and ignore him.

Baasha, a local thug controls the whole village by his atrocities. Pazhanisamy, who relocates to the village, earns Baasha's enmity when he tries to end his reign.

A young man and an older woman fall in love and decide to marry. However, their lives become more complicated when he learns that his father is in love with the same woman's daughter.

Ravi is arrested when he accidentally kills his friend who tries to molest his lover, Radha. Years later, when he is released from the jail, he tries to meet Radha but she avoids him.

Rajalakshmi raises Ramu, an orphan, as her own son who in turn always protects his foster family. However, he must stop his malicious foster brothers from marrying off their real sister to a gangster.