OMG Oh My God movie is adapted from a highly acclaimed Gujrati play named "Kanji Virrudh Kanji". It also includes influences of Paresh Rawal's Hindi play "Krishan vs Kanhaiya".
The story is based on the life of Kanjibhai (Paresh Rawal), an antique shopkeeper. When a tornado destroys his antique store, he begins to disbelieve in God.
The film revolves around his journey at taking down God which he is unable to do, but clearly doesn't realize, and soon begins to fight all the priests of the city, which starts mayhem until Lord Krishna (Akshay Kumar) pays Kanji an unexpected visit.