What is Tenet about?
The plot for Tenet is one which is better not knowing before entering the cinema, as spoilers can be easily found with very few words uttered.
The official synopsis is a good attempt at giving sufficiently spoiler-free information and reads: “John David Washington is the new Protagonist in Christopher Nolan’s original sci-fi action spectacle Tenet.
“Armed with only one word—Tenet—and fighting for the survival of the entire world, the Protagonist journeys through a twilight world of international espionage on a mission that will unfold in something beyond real-time.
source: express.co.uk