The first day of Cal's planned strike arrives, and while he and his allies set up their picket line, Lily struggles to decide where her loyalties lie. Inside the hospital, the industrial action causes trouble for Sam, who resolves to make up for staff shortages by manning the ED himself, despite his lack of experience. Meanwhile, Iain's pride over Gemma's recent achievements is dashed when he realises she was the one who leaked lurid pictures of Alicia online, and a hard-line racist is admitted after being injured in a pub brawl