At birth the Black Widow (aka Natasha Romanova) is given to the KGB, which grooms her to become its ultimate operative. When the US.S.R. breaks up, the government tries to kill her as the action moves to present-day New York, where she is a freelance operative. The standalone film will find Romanoff living in the United States 15 years after the fall of the Soviet Union.
Markus, a deployed military man, has to go home to his teenage daughter, Mathilde, when his wife dies in a tragic train accident. It seems to be plain bad luck - but it turns out that it might have been a carefully orchestrated assassination, which his wife ended up being a random casualty of.
Six people unwittingly find themselves locked in another series of escape rooms, slowly uncovering what they have in common to survive. Joining forces with two of the original survivors, they soon discover they've all played the game before.
All the rules are broken as a sect of lawless marauders decides that the annual Purge does not stop at daybreak and instead should never end.