It is 2027. France is in a state of economic decline and moral decay.

As the country plunges into a closely-fought presidential campaign, the French state falls victim to a series of mysterious and unsettling cyberattacks. The sophisticated nature of the attacks leaves the best computer scientists at the DGSI – the French counter-terrorism agency – scrambling for answers.

An advisor to the country’s Finance Minister, Paul Raison is close to the heart of government. His wife Prudence is a Treasury official, while his father Édouard, now retired, has spent his career working for the DGSI. When Édouard has a stroke, his children have an opportunity to repair their strained relationships, as they determine to free their father from the medical centre where he is wasting away.