Nurse Emma is called to resus to help 71-year-old Thomas who has had a suspected stroke, and has a narrow window of time to give Thomas a life-saving drug. While treating him, Emma tells us the story of how she went from working in a dry-cleaners as a teenager to pursuing a career as a stroke nurse. At the same time, 88-year-old Mary is rushed to St George's after falling at home and injuring her head.