一天晚上，马特试图制止一场打斗，却因此变成了杀人犯。如今，有犯罪前科的他重建了自己的生活，但是一个来电打破了这一切。

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.