In a thrilling sneak peek released for his birthday, Mammootty steps back into Tamil cinema with 'OM: Chapter One.' In this Rajkumar Periasamy film, he takes on the role of Karthikeya, an international smuggler, promising to showcase his acting prowess. The film also features Dhanush and Sai Pallavi, along with Sreeleela in a pivotal role, and is set to hit theaters globally on October 16, 2026.