Mangamma Sabadham is a Tamil language film starring Kamal Haasan in the lead role of the protagonist. While Madhavi and Sujatha acted as female lead.

After a rich man falls in love with his employee, he learns that she already loves someone else. However, when he tries to get him killed, an unexpected turn of events leads him to make a sacrifice.

Mahesh is in love with Merlyn, who belongs to an Anglo-Indian family, but this relation is opposed by Shailaja Varma, his sister. Shailaja too had a love affair a long time back with Devan, who was killed by Shailaja's family. A conflict arises between Mahesh and Shailaja. Now Sidarth loves Shailaja and would like to marry her.

Radha falls in love with Raja, son of a rich lawyer, and ends up pregnant. Now, Raja and his father refuse to accept her. Radha decides to battle it out in the courts in order to seek justice.

Raja, a poor man, falls in love with Radha. Radha's uncle is in debt and looks for a rich guy to settle his debt. Raja lies about his background but gets exposed.