Shiva (Ranbir Kapoor) is a young DJ in Mumbai. He is born with special powers – the fire cannot burn him. He possesses Agni Astra in him. He meets a beautiful girl Isha (Alia Bhatt) and falls for her charm. But Shiva gets dreams and in his dreams, he sees persons that include a scientist (Shah Rukh Khan), an artist Anish (Nagarjuna), and a guru (Amitabh Bachchan).

Shiva and Isha go to Varanasi to inform Anish that Junoon (Mouni Roy) and her gang are going to kill him and then head to the Himalayas where Guru resides in an ashram.

Why Junoon is after Brahmastra which is scattered in three pieces at different places and what is the secret behind Shiva’s birth and his special powers?