On the same day that police officer Vivek Gopinath rejoins work after suspension, a suicide confession of a guilt-ridden man unearths a 40-year-old cold case of a missing woman. In a bid to redeem himself, Vivek pursues the handful of clues left behind, connecting her past, which last places her in public at the shooting location of Bharathan and Mammootty’s Kaathodu Kaathoram in 1984-85.