Director: Prashanth Raj, Raaghav Nayak
To bring the dead back, one doctor is willing to break every rule of medicine except the ones written by her own past.
What is O2 about?
O2 follows a doctor whose obsession with reviving the clinically dead isn't purely scientific curiosity; it's rooted in something that happened to her long before she ever picked up a scalpel. She develops an intravenous oxygen treatment that pushes past what her hospital, her colleagues, and medical ethics are willing to accept, and the film tracks her as she tests its limits in secret while the people around her start to notice the cost. This Kannada-language thriller from directors Prashanth Raj and Raaghav Nayak blends clinical procedure with something closer to spiritual horror, framing resurrection less as a triumph of science and more as a debt that has to be paid back somehow. Ashika Ranganath carries the film as the doctor, playing someone who is clearly brilliant and just as clearly not entirely trustworthy with the power she's built for herself. Co-director Raaghav Nayak also appears on screen, and the supporting cast, including Praveen Tej and Prakash Belawadi, orbits her with a mix of complicity and growing alarm. Rather than resolving into a straightforward miracle-cure story, the film keeps circling back to what love and grief actually cost the people willing to pay any price for them.
Cast & crew
Ashika Ranganath leads as the doctor at the center of the story, balancing clinical confidence with a private desperation that only becomes clear as the film unfolds. Raaghav Nayak, who co-directs, also takes a role in front of the camera, alongside Praveen Tej and Prakash Belawadi.
Context & significance
Released in 2024, O2 belongs to a run of Kannada-language genre films that have found wider attention by mixing medical-thriller elements with supernatural and spiritual undertones rather than sticking to a single genre lane.
Where & how to watch
O2 is available to watch on K-Time with a free account login. The platform is built around Persian-speaking audiences, so the browsing experience, search, and title pages appear in Farsi even though the film's dialogue is in Kannada.