Satyaraj and Sibi Raj come together yet again in `Ma. Mu.' Satyaraj's job in the film is to separate lovers. Aparna, of `Pudukkottaiyilirundhu Saravanan' and `ABCD,' is paired with Sibi Raj. The title is intriguing but it only refers to the two important characters, Madhavan and Muthu. Venkat Prabhu (this could be a break for Venkat) plays Madhavan while Sibi is called Muthu.