Surgeons must plan their next move carefully when Daisy, a 22-month-old girl, arrives at St George's Hospital by air ambulance after being kicked in the head by a horse at her family's stables. Meanwhile, 54-year-old Mike, who has a form of medication-resistant epilepsy, arrives in minors with a bandage around his jaw after falling face-first onto the pavement. Plus, 100-year-old Florence and her daughter Frances, who was diagnosed with dementia three years earlier, arrive at the hospital when the former suffers what appears to be a stroke.