Friends starring by Vijay, Surya sivakumr and Decayani. Aravindan (Vijay), Chandru (Surya) and Krishnamurthy (Ramesh Khanna) value friendship over everything else, even family, and for this reason, Chandru resists the advances of Aravindan's sister Amutha (Vijayalakshmi). When the trio take up a painter's job at a mansion, Aravindan falls in love with Padmini (Devayani), who lives there. Padmini's jealous cousin (Abinayasri) makes him believe that his overtures are reciprocated. When the truth is revealed and Padmini rejects him outright, Chandru stands up for his friend and speaks ill of her. This makes her swear to separate the friends.
After the marriage, Aravindan realises the hand of Abhinaya behind all the mishaps and Padmini too realises Chandru is innocent. Then the marriage of Chandru and Amutha is arranged.