Chiru and Saakshi (Iddaru Mitrulu or IM) tease each other very much and at the same time, they love (as a friend) each other so much. At one point of time, Chandra Mohan expresses his wish to get IM married to each other, which they jocularly refuse and say that they are just friends. One fine day Chiru spots Ramya at a shopping complex and gets attracted to her. He confesses to Saakshi that there is something about Ramya. She gives him a few tips over pataoing a gal. Ultimately Chiru succeeds in wooing Ramya. They get married with the consent of their parents (who happens to be childhood buddies). Ramya get little suspicious about the relationship between IM right on the day of marriage. Suresh, an ace ad photographer follows Saakshi and succeeds in impressing upon her. She sends Chiru as messenger for their marriage after taking opinion of Chiru about their love. Saakshi and Suresh ends up in tying the knots. After a few days, Saakshi finds Suresh flirting with one of his! ! model girl. When confronted about this Suresh tells her that nature of ad business demands such a type of intimate flirting sessions. Chiru comes to know about this from Saakshi and go to Suresh place to warn him. Suresh rebuffs questioning relationship between IM. Chiru feels helpless as IM are just friends and share no blood relationship. Suresh insults later Chandra Mohan when he tries to rectify him, which leads a fight between Suresh and Chiru. Exasperated by this incident Suresh pains Saakshi's heart by alleging an illegitimate affair between IM and drags Saakshi out of his house on the rainy night. Chiru spots Saakshi on the road and try to console her, which is witnessed by Ramya.

INTERVAL

Saakshi is staying with her dad. Ramya starts treating Chiru indifferently since she spotted both of them in a suggestive pose. Saakshi realizes that she is pregnant. One night, when Ramya and Chiru are getting ready for a cozy romance during late night, Chiru receives a call from Saakshi's house cleaner that she is fallen from stairs and she is in critical position. Chiru immediately leaves to Saakshi's house after explaining the situation to Ramya. Ramya felt frustrated after Chiru leaves her abruptly in the middle of romance. Later Ramya gives Chiru an option to choose between her and Saakshi. Chiru happily opts for friend to wife. This is the last straw and Ramya leaves to her parent's place after encouraged by her mother to teach Chiru a lesson. Saakshi, unaware of the widening gap between Ramya and Chiru, is reaching close to her delivery date. Chiru come to know about Saakshi's innate desire for a "Seemantham". He arranges a Seemantham for her. Later Suresh looses hi! ! s position of ace photographer to another person and realizes the importance of Saakshi. As the movie reaches climax, Saakshi comes to know about that gap she created between Chiru and Ramya by her. When Saakshi go to Ramya's house to convince Ramya about the relationship between IM, Vijaya and Ramya insult her. While coming back to home, Saakshi is bumped by a car. Chiru admits Saakshi in hospital. By this time Suresh enters the hospital to forcibly take her to his home. Suresh try to do abortion to Saakshi thinking that the reason for pregnancy is Chiru. Chiru come just in time to save Saakshi. Then the chase of cars begun, which ultimately ends up in an accident that leads to Chiru saving the life Suresh. Suresh then realizes the IM relationship. Later Ramya too realizes her fault. Hence, the movie ends up as Mugguru Mitrulu with saakshi's kid joining the existing IM and making it MM.