Sarah and her son, Bibin, live an isolated life. As loud cries of infants haunt Sarah, she scribbles names on her walls. What secret is she keeping?

Twelve years later, CI Aji Kurian, investigating the mysterious death of actor Ancy, finds himself drawn to the name Bibin. Sanjeev Krishna is devastated by his wife's death.

Merlin's revelations lead Aji Kurian to Sarah's letters. After unravelling Sarah's most twisted secret, Aji finds himself pulled into a dark vortex of truth.

Bibin's puppeteering of human lives takes him to a prominent politician. As Aji digs deeper, he meets with fresh challenges and dreadful questions.

A tapestry of truths, theories and mysteries woven together by Aji reveals the scary extent of Bibin's killing spree. However, Aji faces a threat more perilous than Bibin. What is it?

The endgame. The ultimate gamble. Aji and his team are locked in a deadly game where the stakes are high. In this life-or-death showdown, whose truth will prevail?