On the evening of 2 June 2023, a devastating crash involving three trains killed nearly 300 people and injured more than 800 at Bahanaga Bazar station in India’s eastern Odisha state, as two passenger trains collided with a freight train. What caused one of the worst train disasters in modern history? This film forensically examines what went wrong and asks whether it could have been prevented and if enough is being done globally to ensure our railways are safe.