Kathiravan, a major in the Indian army with anger management issues, is compelled by circumstances to borrow a loan from a bank with false documents. When the entire money in the account vanishes, Kathiravan tries to track down the scamsters, and it leads him to White Devil, a master hacker.

Sharu, a Youtuber obsessed with views and subscribers, orders a "Mystery Box", kicking off a series of eerie events, blending suspense and supernatural intrigue.