Prabhu is a reputed and respected man in his village. He has two sons; Vemal and Karthik Kumar. The latter falls in love with Chandini Tamilarasan who is the daughter of Jayaprakash - a well known man in a neighbouring village. He also has another daughter and son; Anandhi and Vamsi Krishna. 

Due to some family issues between Jayaprakash's wife Saranya Ponvannan and her brother, the elders vow to get Chandini married into their (Saranya's brother's) family. Soon situations get out of hand and Karthik Kumar commits suicide as both the families refuse to let him get married to Chandini. 

Fearing for his brother's life Vemal kidnaps Chandini and gets her married to Karthik. Initially, both the families stay disappointed and angry with them, but eventually accept their union after the couple delivers a baby. In a desperate measure to find peace with her brother, Saranya then decides to get her second daughter Anandhi married to her brother's son. 

In this situation, Prabhu interferes and vows that he will make sure that Anandhi's union happens without any trouble. This irks Vemal, as he is in love with Anandhi and was thinking about asking her hand in marriage. How he convinces his father to let go of the vow and seek his support, and wed Anandhi with their elders blessings forms the crux of the story.

After a brief gap Vemal is back with another film with a village backdrop. The actor who is known for choosing family oriented scripts, has lived his character in the film. He has pulled of his role and all the action sequences with ease. Anandhi has delivered a challenging role really well and looks cute at places. 

Actors like Prabhu, Karthik Kumar, Chandini Tamilarasan, Saranya Ponvannan, Jayaprakash and Vamsi Krishna all have done justice in playing their parts neatly. Robo Shankar's comedy works in parts, while Yogi Babu's humour portions click well with the audience. Bigg Boss fame Julie plays an important cameo, and has delivered a convincing performance.

Boopathy Pandian has attempted to make a family drama film, which mainly revolves around sentiments and humour. The director has done a pretty decent job in the directorial department, even though the wafer-thin story has nothing new to offer but has all the elements one expects from a true commercial movie. 

Yet, the screenplay could have been more tightly woven as the first half travels in a mindless way with cliched comedy and action, while the second half takes a sentimental route. Jakes Bejoy has composed the tunes and his background scores are much better than the songs. PG Muthiah and Suraj Nallusamy together have cranked the camera and they have shot well.

In short, Mannar Vagaiyara, is a family entertainer.