Things heat up when a familiar face returns to Firehouse 51 to serve with Kidd (Miranda Rae Mayo) on a special task force. Then, with Tony (Anthony Farraris) days away from breaking the CFD's perfect attendance record, Mouch (Christian Stolte) and Capp (Randy Flagler) work to keep him safe. Meanwhile, old memories and grudges resurface when Gallo (Alberto Rosende) reunites with a family member in the new episode "Danger Is All Around."