Marumalarchi is about Mammooty is the centre figure of 38 patti the man of honour who has dedicated his life for the welfare of the village people. He is so respected that the people even erect his statue. In the crowded fair (sandhai) Mammooty pulls Devayani\'s hand to save her from an approaching cobra. Unfortunately nobody but the hero and his car driver seems to have noticed the cobra. Devayani makes a big fuss of the event by assuming Mammooty to be a rogue. The local big boys (Ranjith and Mansoor), who are also in similar status as Mammooty in their village, beat him up in public without taking notice of his defense. On the whole the movie portrays how mammootty over come on this problems.