Documentary following West Midlands Ambulance Service at the peak of the Covid-19 pandemic in April, from the perspective of the crews, control room staff and managers as they deal with the human cost of the biggest ever challenge to the service. To get more ambulances onto the frontline, managers deploy student paramedics, with 21-year-old Sam and 20-year-old Caitlyn encountering patients with breathing difficulties, in care homes, and with mental health issues that appear isolation-related.