At the end of the worst day in his life, Arun Prajapati (Salman Khan) angrily rages against God for making his life miserable. To his astonishment, God (Amitabh Bachchan) appears before him in human form and endowing Arun with all of his divine powers, challenges Arun to take on the big job and see if he can do it any better.

Arun responds to his newfound powers with childlike zeal and sets off making one hysterical yet disastrous decision after another. The love of his life Alia (Priyanka Chopra) is astonished at the 'new' decisive and confident Arun. He thinks he can make the world a happy place by granting everybody their wishes. But to his horror, this results in unprecedented mayhem. Ultimately, Arun realises that he is only human, and being God is tougher than he thought!