The trailer of OM: Chapter 1, the Tamil action thriller that brings Dhanush and Mammootty together on screen for the first time, is set to be released today, November 13. Production house Wunderbar Films announced the trailer date on November 12. The film opens in theatres worldwide a week later, on Friday, November 20, 2026.
OM: key details
- Cast: Dhanush, Mammootty, Sai Pallavi and Sreeleela
- Director: Rajkumar Periasamy
- Music: Sai Abhyankkar
- Producers: Shraddha Agrawal, Dhanush and Azmat Jagmag
- Banners: Wunderbar Films and RTake Studios
- Trailer: November 13, 2026
- Release: November 20, 2026, in theatres
A first-time pairing
Much of the buzz around OM comes from its two leads. Dhanush is one of Tamil cinema’s most bankable actors, and Mammootty is a Malayalam cinema veteran with a long list of acclaimed roles. This is the first time the two have shared the screen. Reports say the film also marks Mammootty’s return to a Tamil film after about seven years, and that he plays a smuggler.
Director Rajkumar Periasamy is best known for Amaran, the biographical war drama that was a big success. OM takes him into action-thriller territory. The “Chapter 1” in the title suggests the makers have plans for more than one film, though no sequel has been officially announced.
Why the release moved from October
OM was first set to release on October 16. That was just a day after Rajinikanth’s Jailer 2, which was scheduled for October 15. In September, Dhanush said the team moved the film out of respect for Rajinikanth and to avoid a clash between two major releases. The new date of November 20 gives the film a clearer run.
What to expect from the trailer
So far, the makers have shared posters and short glimpses that introduce the characters, including Mammootty’s look. The trailer should give the first proper sense of the story, the tone of the action and how the two leads face off. With Sai Abhyankkar on music, fans will also be watching for the background score.
Release plans
The film is being positioned as a big release beyond Tamil Nadu. Distribution rights for Kerala have already been sold, and the film is expected to get a wide opening there given Mammootty’s following.
Advance bookings usually open a few days before release. If the trailer lands well today, OM could be one of the bigger South Indian openings of November.
Reporting based on FilmiBeat, DT Next, Onmanorama and Deccan Herald.
Featured image: Joe Mabel, via Wikimedia Commons (CC BY-SA 3.0)
