Blue Watch are joined by two new recruits, young firefighter Billy Ray and new Leading Firefighter Geoffrey 'Poison' Pearce, Sicknote has to fend off the affections of Cynthia and Bayleaf crashes the appliance when responding to a shout.
Hallam is temporarily seconded to the Fire Investigation Unit where he has to decide whether a tragic fire on a council estate was an accident or arson. Bayleaf, meanwhile, is questioned by the police about his accident.
Blue Watch have to tackle an uncontrollable fire at a derelict building inhabited by dossers. Searching the burning building, Nick falls through a collapsed floor leading Geoff to abandon his post to try and save him.
New driver Sally Reid joins the watch. Meanwhile, scaffolding around a construction site collapses trapping people on the street below. Kevin is sent in to the debris to find those trapped - including a baby.