The makers of Vemal's upcoming film, Sir, announced on Monday that the film's audio and trailer will be launched on Wednesday, September 18. 

Sir, directed by Bose Venkat, is the second film in which Vemal plays a teacher, with the first one being the National Award-winning Vaagai Sooda Vaa.

The teaser, which was released in June, showed a man possessed by a purported divine entity running to school land and earmarking it, for which it has to be demolished. Vemal, who is the school's teacher, stands in the way of powerful people trying to reduce the building to rubble.

Apart from Vemal, Sir also stars Chaya Devi Kannan, Siraj S, Saravanan, Rama and Jayabalan in prominent roles.

The film was earlier titled Ma Po Si. The makers later renamed the film Sir "after careful consideration and planning to align with our vision for the project."

On the technical team, Sir has music by Siddhu Kumar, cinematography by Iniyan J Harish, and editing by Sreejith Sarang. The film is by Siraj S and Nilofer Siraj under the production banner SSS Pictures. Sir is presented by Vetrimaaran under his Grass Root Film Company. A release date for the film is yet to be announced by the makers.