A computer virus shuts down Holby’s power, putting Jac (Rosie Marcel) and Connie (Amanda Mealing) at loggerheads, as they fight against all odds and in makeshift conditions to save the lives of close friends and colleagues.
During a hospital-wide evacuation, Ric (Hugh Quarshie) mounts a daring rescue for a trapped and weakening Essie (Kaye Wragg) - even as he struggles with a shocking revelation about Darla (Naomi Katiyo).
In the midst of chaos, can Ange (Dawn Steele) and Serena (Catherine Russell) agree on how best to care for Holly (Emma Curtis), who is on life-support?