The film tells the story of three friends MX3 - Masdor (Saiful Apek), Mamat (Faizal Hussein) and Malek (Zul Yahya) who set up the company private investigator named MX3. During operation the investigation, they often get only small cases until that Mrs. Lolita (Syanie) are willing to pay wages that are expensive to spy on her husband having an affair.

Datuk Pengiran Abdul Rahman has asked his lawyer to find the people to inherit his fortune worth RM30 million. Besides his two sons, Azlee, a businessman and Mazlan, a fashion designer, there are still two more people on the list. One of them is Saiful, an orphan and a mechanic who do not see that he will be inheriting his dad's million-dollar fortune, because he has never seen his dad before. The other is Ratnapuri, a Siamese woman. Azlee, Datuk's eldest son, cannot accept the presence of Saiful and also Ratnapuri when his father's will is read at Datuk's residence.