Sakshi, a talented artist who is deaf and mute, gets entangled in a criminal investigation when she unexpectedly witnesses a tragic incident that occurs in a villa with a reputation for being haunted. With a team of police detectives determined to get to the bottom of the case and the list of suspects ranging from a ghost to a missing young girl, Nishabdham promises to be an edge-of-the-seat thriller that will keep the audience guessing until the very end.