Koi Jaane Na is a thriller mystery drama about a heartbroken writer who is famous for his best sellers and is struggling with writer’s block. To overcome the block, he goes to a quiet hill station where he falls in love with a young girl. Things are fine between the two till he confronts and uncovers a copycat serial killer who has mysteriously come alive from the dead and is on a killing spree. How does he confront the killer or is it just an illusion created by his imagination?