Anatomist Gunther von Hagens and emergency medicine consultant John Heyworth use plastinated human bodies to show exactly what happens inside a person during a serious accident or assault. Across three episodes, made with the British Red Cross, the pair recreate specific traumas, a crushed chest, a stabbing, a road collision, and dissect the corresponding body part to trace the physical damage step by step: which vessels tear, which organs fail first, how long a person has before blood loss or swelling becomes fatal. Von Hagens narrates the anatomy while Heyworth supplies the clinical picture, explaining what paramedics and emergency room doctors actually do at the scene and in the first minutes after arrival, from airway management to controlling bleeding, and why timing determines whether a given injury is survivable. The series pairs real dissection footage with case-based medical explanation rather than dramatized reenactment, aiming to show viewers the mechanics behind first-aid instructions they may have heard but never seen justified on an actual body.