An estranged man deemed to be a beast vows to break free from the evil world and transform himself for his foster daughter.
Arjun is a theater artist who is suffering from an illness and has to take a pill every 56 minutes. Parallel to his misery is a murder investigation of three neurosurgeons lead by CBI officer Priya Krishna. Priya meets Dr Ashwath and the two go on an exposition about the medical mafia and its consequences.
Pugazh, a rookie cop earns an immediate disliking from his higher official Inspector Rathnam because of his brilliance in handling the case. Inspector Rathnam is killed by a masked man who shoves expired batteries into his mouth. A medical industrialist is also done away in the same way. Who is the murderer using the unusual method and why he is doing it and whether he gets caught or not?