The midseason finale of “9-1-1: Nashville” plunges the city into a new crisis just as it was recovering from tornado devastation. The episode centers on Don’s morally complex decisions during a distillery fire involving his father-in-law Edward, including blackmail to secure funds for his department amid threats of layoffs. Meanwhile, Cammie faces workplace challenges when an outside agency scrutinizes call center efficiency, but her dedication and a discovery of embezzlement protect her job.

The episode ends on a tense cliffhanger with a citywide computer virus attack and a hijacked tornado siren causing chaos, leaving Nashville on edge with a six-hour countdown threatening violence. Showrunner Rashad Raisani teases more drama and an upcoming crossover event with “9-1-1,” promising a gripping return in January.