A class-divided friendship goes through highs and lows through several decades.

The story concerns Muthu, a charismatic, well-respected and loyal servant and charioteer of Raja Malayasimman, a wealthy zamindar. While Muthu and Raja's exploits lead them to fall in love with the same woman, an actress and dancer named Ranganayaki, Raja's materal uncle Ambalathar is keen on assuming control of the family's property.

Loganathan, a senior cop is asked to mentor Prakash, an academically bright but faint-hearted rookie and this unlikely duo team up to investigate a series of murder cases, and realize all of them are interlinked and that a psychopath serial killer is on the run.