Attempting to surpass his father's legacy, a reclusive neuroscientist becomes entangled in his own experiment, pitting ten fragments of his consciousness against each other.
Kaaliyan has a sister who marries a young man without the permission from Kaaliyan and moves to Kolkata with her husband , where she faces unknown threats. Soon her brother Kaaliyan comes to the rescue.
In a country where the government imposed a national curfew and a single mother, Nayanthara, notices eerie changes in her daughter's behaviour. On getting virtual help from a pastor played by Anupam Kher who proposes an online exorcism.
ACP Shanti, an honest police officer, is given the responsibility of investigating the mysterious deaths at a palace in Kanchipuram. But when she gets there, the situation turns from bad to worse.