Sathyanathan is condemned to death for brutally murdering four persons – two adults and two young girls – and is awaiting his final call. He shows no remorse and is just as cheerful as a man who knows he has done no wrong. In a series of flashbacks, Sathyanathan's story is revealed.
A group of pilgrims travels from a border village in Kerala to Sabarimala to visit Lord Ayyappa's temple. Later, an atheist police constable joins them, after which unexpected events take place.