Madhavan made his directorial debut with Rocketry: The Nambi Narayanan. The film features Madhavan in the role of ISRO scientist Nambi Narayanan. Speaking at the press meet, Madhavan said Nambi Narayanan is a person who doesn't talk about his achievements.
Madhavan said, "After seven months of research, I returned to meet him with my final draft, I was blown out of the waters by his yet another shocking revelation. He just spoke about his achievements, which left me awestricken. At a certain point, I interrupted and asked him, “Sir, is this all true?” and he was like, “Why you say so?”. I asked him on a disappointing note, “I spent seven months writing a script based on your life, but you never told me anything about your remarkable achievements.” And guess what happened? He just gave a cool reply, “I didn’t do anything extraordinary. I just worked and got paid.” It was a blow of shock to me, which made me realize that there are two categories of patriotic people in the country. The one, who chants, glorifies, and spreads the essence of patriotism, and the other ones – The unwritten and unknown heroes. I wanted the Nation and world to know about the unheard epic life of people like Nambi Narayanan. It was disappointing to realize that many of us didn’t know that he was a Tamilian born in Nagercoil, and his contribution to the progress of the country was so immense but remained obscure to the public glare. So this is the reason behind my decision to make ‘Rocketry’.”