404 movie is a Hindi psychological thriller conveying the conflict between what we believe and what exists in reality, that is unknown to us.
The film begins with Professesor Anirudh (Nishikant Kamat) who strongly believes in science and according to him things that don't have scientific explanations do not exist. But a room in his Medical Institutions is rumoured to have supernatural powers.
A lucid students Abhimanyu (Rajvvir Aroraa) occupies that room and the thriller story unfolds. Abhimanyu experiences the unusual, and has to decide, whether to lay his belief in supernatural powers or in Science.