The movie "Aa Gaya Hero" revolves around the story of Sooryavanshi (Arjun Kapoor), a young man who comes to India from the United States to attend his cousin's (Tusshar Kapoor) wedding. Sooryavanshi is a well-educated and well-mannered individual who gets caught up in a series of misadventures when he befriends a local gangster, Raja (Tusshar Kapoor).