Abhimanyu enrolls in a medical institute and moves into a hostel room, only to discover that ragging is a serious issue. After becoming a victim himself, he requests a new room, Room 404, which has been locked since a student's suicide three years prior. Despite initial reluctance, he's allowed to move in, but soon starts hallucinating about Gaurav's ghost. His friends and professor are skeptical, thinking he's mentally unstable, but Abhimanyu is determined to prove Gaurav's spirit is real.

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As a driven student settles into their new dorm room, they begin to unravel the dark secrets of their predecessor's tragic past, which seems to haunt the space.