The hospital finds itself full of patients following a flash flood in the south west of the country. The basement is is danger of flooding. As Connie and Joseph operate on Elaine the back-up generator fails.
This series is a spin-off from the long running BBC medical drama Casualty. Set in the same hospital as its sister series, this show follows the everyday lives, professional and personal, of the doctors, nurses and patients who find themselves, for various reasons, in the wards of Holby City General Hospital