Maya and Kamakshi suffer at the behest of tantric. Their friend Ranbeer, a filmmaker, starts work on an investigative documentary to expose those who misuse occult practices. Unknowingly, they embark onto a trail of the biggest undiscovered secret of ancient India's esoteric practices. As they progress, the mystery thickens and takes them to hotbeds of occult practices - Banaras, Kamala and even Yana, where they witness eerie aghori rituals, mystical sanyasis and tantric sex. Soon, a series of uncanny threats emerge, from severed heads of endangered species to the abduction of those who help the trio, and a tsunami of trouble hits them as they run helter-skelter for cover. Will they succeed in unearthing the secret and the mystic sinners behind it? Or will they entangle themselves in an unholy Nexus?