Michael Madhana Kama Rajan is a 1990 Tamil comedy film directed by Singeetam Srinivasa Rao and written by Kamal Haasan, with Crazy Mohan penning the dialogues.
A rich industrialist, VenugopalR.N. Krishna marries a woman, SushilaJayabharathi and they have quadruplets. His brother, NandagopalR.N. Jayagopal tries to have her and the newborns killed by hired goons. However, the leader of the goons, Santhana Bharathi, having no desire to kill the babies, adopts one Michael, drops one in an orphanage Raju, one in a temple Kameshwaran who is picked by Palakkad Mani Iyer Delhi Ganesh, and one Madhanagopal a.k.a Madhan in a car that belongs to the babies biological father.30 years roll by. Madhan is now a London educated businessman. Venugopal has raised Madhan as his adopted son, not knowing he is in fact his biological son. Venugopal is killed by his brother Nandagopal and nephew, Ramgopal a.k.a Ramu Nassar for his inheritance, but unbeknownst to them, the will has already named Madhan as the beneficiary. Madhan returns to Bangalore from England to take over his fathers company. He confronts Avinashi Nagesh, his fathers assistant, over his embezzlement, while reluctantly promising to forgive him if Avinashi accepted culpability. ........
Source: Wikipedia