Synopsis

When a passenger jet falls silent in mid-flight, Firehouse 51 is dispatched to an airfield, thrust into a desperate emergency. Their initial findings reveal a larger, more perilous mystery – a puzzle with the potential to extend far beyond the tarmac and endanger countless lives. The story unfolds across Chicago Fire season 14, episode 13 (part one), and continues in Chicago P.D. season 13, episode 13 (part three).