Pei Kottu Description:

Kavya, a reporter, unknowingly picks up a haunted button camera. Soon, she is mistaken for Shruti, a missing musician whose music was stolen by a film crew. Shruti's spirit possesses Kavya, seeking justice for her murder. The spirit kills those responsible, and evidence from the button camera exposes the truth. Shruti's spirit finally departs after gaining her rightful recognition.