In North London security must manage an abusive man as he refuses to leave, despite being discharged and a patient suffering from a heroin overdose is rushed to Rotherham General Hospital's resus. Coming to his wit's end with a severe toothache, patient Kieran's abscess spreads to his airways and Doctor Mehran must decide whether he needs emergency surgery. Plus, security guard Justin suffers a head wound after being attacked when he tried to prevent a theft at his work.