Dhanush's fourth directorial, Idli Kadai, is gearing up for release on Wednesday. Also starring Dhanush as the protagonist, the film also has Arun Vijay appearing as the antagonist. In a recent interview with Cinema Vikatan, Arun Vijay recalled how Dhanush narrated the film's story to him and how it helped him to make a decision about taking the film up.

He said, "Dhanush’s narration for Idli Kadai was quick, precise, and to the point. He gave me a clear picture of my character, explained his role, and laid out how we fit into the larger story. In just 45 minutes, he managed to convey everything with such clarity that I immediately knew what the film would offer audiences. I remember telling him, 'I have confidence in you, brother. Let’s do it.' There was no question of taking time to think—it was an instant yes."

Dhanush stars as Murugan in Idli Kadai. The star cast includes Nithya Menen as Kayalvizhi, Sathyaraj as Vishnu Varadhan, Arun Vijay as Ashwin, Samuthirakani as Marisamy, Rajkiran as Sivanesan, Shalini Pandey as Meera and Parthiban as R Arivu.

The recently released trailer shows Dhanush as a man who quit his job at a Michelin Star restaurant to help save his father's (Rajkiran) idli store. At one point in the trailer, Sathyaraj's character tells his son, played by Arun Vijay, to learn from Murugan instead of leading a wastrel life as a prodigal son. The plot also includes a conflict between Arun Vijay's character and Dhanush's Murugan, which emerges after the latter's departure from his restaurant.

The technical crew comprises Dhanush's frequent collaborator, composer GV Prakash, cinematographer Kiran Koushik, editor GK Prasanna, and art director Jackson. The film is produced by Akash Bhaskaran through his Dawn Pictures banner and Dhanush through his Wunderbar Pictures banner. Inban Udhayanidhi, son of Tamil Nadu's Deputy Chief Minister Udhayanidhi Stalin, will get his first film credit as a distributor.