Feeling like he is not quite ready to return to work as a paramedic whilst on his road to recovery, Iain takes on a new challenge as a 999 call handler. He answers a call from PC Rox Adams, who is investigating a tip-off in a warehouse and finds two unconscious drug addicts, and Frankie, is who trapped in a house fire with her younger sister and her drunken father. Elsewhere, Iain butts heads with his therapist, Claire, and believing his medication is no longer working for him, he decides to leave therapy.