September 5 unveils the decisive moment that forever changed media coverage and continues to impact live news today.

Set during the 1972 Munich Summer Olympics, the film follows an American Sports broadcasting team that quickly adapted from sports reporting to live coverage of the Israeli athletes taken hostage.

At the heart of the story is Geoff (John Magaro - Past Lives), a young and ambitious producer striving to prove himself to his boss, the legendary TV executive Roone Arledge (Peter Sarsgaard - Dopesick). Together with German interpreter Marianne (Leonie Benesch - The Teachers' Lounge) and his mentor Marvin Bader (Ben Chaplin - The Dig), Geoff unexpectedly takes the helm of the live coverage. As narratives shift and the hostages' lives hang in the balance, Geoff grapples with tough decisions while confronting his own moral compass.