TMDb/9-1-1: Nashville TV 9-1-1 meets Nashville! Buck & Eddie head to Tennessee for a two-hour crossover event. Don't miss the action March 5 on ABC. March 17, 2026 AceShowbiz - The 9-1-1 universe is expanding with a special two-hour crossover event featuring characters from the original series journeying to its new spin-off set in Nashville. On Thursday, ABC released a promo for the crossover event between 9-1-1 and 9-1-1: Nashville, scheduled to air on March 5 at 8/7c.