A one-punch attack in the street leaves a man with a potentially devastating head injury, and trauma team leader Richard quickly realises he needs to perform emergency surgery on a bleed inside his brain. A young man arrives with multiple broken bones and suspected internal injuries following a motorbike accident, while a factory worker hopes the team can save his arm after a horrific accident with a circular saw.

Trauma team leader Julie Norton battles to save two patients whose lives hang in the balance. Father of four Ian is rushed in after suffering a cardiac arrest, while another man is bleeding so heavily he risks losing his entire circulatory system. Meanwhile, Ken has fallen from a roof onto a skip, leaving him with a gaping wound to his thigh and potentially life-threatening injuries to his pelvis and spine, and Dr Nayak helps Michael, who has suffered a severe stroke.