The plot follows Manohar (R. Madhavan), a sweet, middle-class family man who has finally achieved the ultimate dream: buying a spacious new apartment on the 13th floor of a high-rise building. He moves in with his extended family, including his loving wife Priya (Neetu Chandra), his doting mother (played by Saranya Ponvannan in the Tamil version and Poonam Dhillon in the Hindi version), and his brother Manoj (Sanjaih Bokaria).
Initially, everything seems perfect. But the apartment-specifically Flat 13B-has some incredibly weird quirks. The elevator refuses to take Manohar up, the milk constantly spoils, and his phone camera distorts his face. The real terror begins when a new television soap opera titled Yavarum Nalam starts airing daily at 13:00 hours. Manohar notices a terrifying pattern: the events happening to the family on the TV show are perfectly predicting the exact events happening to his real-life family a day later. When the onscreen family starts heading toward a brutal, bloody end, Manohar has to frantically race against time, team up with local cop Shiva (Ravi Babu/Murali Sharma), and uncover the dark history of the building before his family becomes the next episode's casualty.



























