Mumbai, Dec. 12 -- What if we said a massive physical fight just broke out between two of India's biggest superstars, Shah Rukh Khan and Ranbir Kapoor? Before your mind races, relax. It wasn't the actors but their on-screen alter egos, Jawan's Vikram Rathore and Brahmastra's Shiva, locking horns.

Things took a hilarious turn when Alia Bhatt, as Rani from Rocky Aur Rani Kii Prem Kahaani, jumped in to stop the chaos. The unexpected trio SRK, Ranbir and Alia came together not for a film but for a high-voltage advertisement, creating a multiverse crossover fans didn't see coming.

Directed by Siddharth Anand for Rungta Steels, the ad shows Ranbir landing a punch on Shah Rukh with the witty warning, "Sar bachaake, Vikram Rathore," triggering ...