“O2″ is a 2024 Indian Kannada-language medical thriller directed by Raghav Nayak and Prashanth Raj, produced by Ashwini Puneeth Rajkumar under PRK Productions. The film stars Ashika Ranganath as Dr. Shraddha Nayak, a brilliant anesthesiologist haunted by her father’s untimely death, which fuels her determination to develop “O2,” an experimental drug designed to revive clinically dead patients. Despite facing opposition from senior medical professionals and battling personal trauma, Shraddha, with support from her colleagues—Dr. Dev (Praveen Tej), Shrushti (Siri Ravikumar), and Venky (Puneeth BA)—pursues unauthorized human trials to prove the drug’s efficacy. The narrative intertwines a romantic subplot involving Shraddha and aspiring musician Osho (Raghav Nayak), exploring themes of love, loss, and redemption. “O2” delves into the ethical dilemmas of medical experimentation and the fine line between scientific ambition and moral responsibility, offering a unique blend of medical intrigue and emotional depth.