Sahodaran Sahadevan movie revolves around Aravindan (Mukesh) is a financier who gives out loans to buy vehicles and specialises in seizing the vehicles of those who default upon payment of installments. Mukundan ( Mukesh) is a doctor who loves acting and acts in tele-serials. Aravindan is assisted by his uncle Kunjananthan (Augustine) while Mukundan has, as his aide and companion, his cousin Appukuttan (Jagadish).
Mukundan’s marriage is fixed with Yamuna (Sreeja Chandran), his uncle’s daughter, while Aravindan meets another girl Arathy (Geethu Mohandas) and falls in love with her. Both Aravindan and Mukundan get married on the same day. And the very same day they set out together for their honeymoon in a car presented by their uncle. But on the way they meet with an accident. One of the two twins is killed while the other remains unconscious.
Nobody, not even their respective wives or parents, is able to tell as to who has died in the accident. The brother, who is in coma regains consciousness, but has lost all memory of his past. He doesn’t even know who he is. This complicates things.