Synopsis

Following a call to a daycare center where they encountered a makeshift methamphetamine laboratory, every member of the firehouse is required to undergo drug testing. Severide hesitates, apprehensive about the potential exposure of his injury and the prescription painkillers he’s taking. Simultaneously, Truck and Squad are pinned down by gunfire while attempting to assist a victim of a gang shooting. A fire erupts in a garage, rapidly escalating from a small blaze to an explosive inferno involvi