The story follows Kumaran (played by ), an angry young police inspector grappling with anger management issues following a traumatic near-death experience. He is forced to take a break by a psychologist, Adhirai (played by Lavanya Tripathi ).

The film boasts a talented ensemble cast and crew, including:

The story follows a young, honest cop named Kumaran, played by Sundeep Kishan. After surviving a near-fatal encounter with a criminal, he is forced to undergo a psychiatric evaluation conducted by Dr. Aadhirai (Lavanya Tripathi). Despite her advice to take more time to recover, Kumaran returns to work, only to discover a series of murders that seem eerily connected to his previous case and a mysterious pattern. As he delves deeper, Kumaran uncovers a conspiracy involving a device called the "Time Bilocator," which was designed to predict and prevent crimes before they occur. The narrative slowly shifts from a standard police procedural into a high-concept science fiction thriller, exploring the ethical limits of neuroscience and the dangers of playing God with human biology. The film even introduces a character named Rudhran (Daniel Balaji) and later the mysterious Dr. Charles (Jackie Shroff), whose actions are tied to a hidden project that gives the film its title. It is an experimental attempt in Tamil cinema that combines supernatural and sci-fi elements with a standard investigative plot. It was released on 14 December 2017 and carries a runtime of 121 minutes. On IMDb, Maayavan holds a score of 7.2/10, indicating generally favorable reviews from audiences who appreciated its unique concept, despite its modest production scale.

Maayavan was not a massive blockbuster, but it has earned a strong reputation among fans of Tamil thrillers.