Every house has a past

Attempting to kickstart his career, Karthik makes a documentary on Alzheimer's disease. His subject, Malathi Menon, lives in a small town outside Harippad with her daughter Athira. Karthik and his team arrive at Malathi's place and start noticing Malathi's unexplainable behavior, where she starts speaking in an ancient language and scribbling on certain pictures.