Produced by : rakesh kumar
Written by : Farah Khan, Mayur Puri, Mushtaq Sheikh
Starring : ShahRukh Khan, Deepika Padukone, Kirron Kher, Shreyas Talpade, Arjun Rampal, Yuvika Chaudhary
Om Prakash Makhija is a junior artiste in the 1970s Bollywood film industry. He and his friend Pappu are trying to succeed as leading actors. Om's mother, Bela Makhija, herself a junior artiste, inspires and encourages her son to succeed. He is in love with film actress Shanti Priya. One evening, Om views the premiere of Shanti's film Dreamy Girl, posing as Manoj Kumar. Later that night, Om becomes drunk and describes his vision of himself as a famous, wealthy film star to Pappu and some local children.
While shooting of a film wherein Om is acting as a scene-extra, he notices Shanti trapped in the middle of a fire scene where the fire has escaped control. He saves her and they become friends. One day, he accidentally overhears the conversation between Shanti and Mukesh Mehra, a film producer. Om is brutally shocked to learn that Mukesh and Shanti had married in secret and that Shanti is about to have a baby. Mukesh Mehra promises to do something for Shanti.
One night, Om notices Mukesh escorting Shanti to the set of their soon-to-be-made film Om Shanti Om. Inside, Mukesh tells Shanti that he will cancel the film, reveal their marriage to the public, and have a grand wedding on the spectacular set. Shanti is pleased, while Om returns back, happy for her. However, now it is revealed that Mukesh has no intentions of fulfilling his promise. He traps Shanti on the set and sets it on fire.
Om sees the studio burning and attempts to rescue Shanti, but Mukesh's guards attack him, and he is badly injured. Om pursues despite this, and enters the burning building. He sees Shanti and runs towards her, but and explosion blasts him outside the building. Om is hit by a car owned by Rajesh Kapoor, a well-known actor who is taking his wife to the hospital as she is in labour. Rajesh takes Om too, but Om succumbs to his injuries in the hospital itself and dies. Moments later, a son is born to Lovely and Rajesh, who is named Om, and implied to be Om Prakash's reincarnation