Series of bucket-killing murders happening in the city. Failure to resolve by police, a team of CBI Officers under CBI officer Sethurama Iyer take up the investigation to resolve the never experienced mystery. Mammootty, Mukesh, Jagathy Sreekumar, Saikumar, Renji Panicker, Soubin Shahir, Dileesh Pothan Added on Netflix 2022-06-15.