The team deal with a new Covid-19 winter wave - as the pressure becomes unmanageable, Abbey takes action to voice the pandemic's full effect on the NHS.

Abbey moves away from her family to protect them. As patients get sicker, Abbey and the team take on the Covid-19 pandemic, stretching each of them to their limits. 

In the lead up to the UK's first Covid-19 national lockdown, acute medicine consultant Dr Abbey Henderson and NHS staff struggle to cope with rising numbers of Covid-19 patients.