Norfolk, England, 1999. During three days, farmer Tony Martin is questioned by police following the violent death of Fred Barras, a teenage burglar who broke into his property, Bleak House, in Emneth Hungate, along with other intruder, Brendon Fearon, on the evening of August 20th of that year.

Ethan Hunt and team continue their search for the terrifying AI known as the Entity — which has infiltrated intelligence networks all over the globe — with the world's governments and a mysterious ghost from Hunt's past on their trail. Joined by new allies and armed with the means to shut the Entity down for good, Hunt is in a race against time to prevent the world as we know it from changing forever.