Captain Michael Strogoff is chosen in Moscow to be the courier of the Tsar, 5,523 km far to Irkutsk, to warn the governor about the traitor Ivan Ogareff, a former colonel, who was once demoted and exiled and now seeks revenge.
Sarah leads a dull, lonely life until the day she finds eleven-year-old Léo, hidden in the trunk of her car. The boy had just lost his father in a shootout in a parking garage. He hid Léo in the stranger's car for his protection. Then a killer stands in front of Sarah's apartment door, kills her neighbor and hunts down the boy. He wants to get information that apparently only Léo knows.
He is Franck Sharko, a crabby cop at the end of his rope. She is Lucie Henebelle, a lieutenant on the anti-crime squad obsessed with evil. Sharko and Lucie investigate top-secret scientific experiments and programs.
In 2022, 30-year-old Eliott writes to his first email address to check if it is still available. He is shocked when a reply comes from himself in 2001... and decides to change his past in order to improve the future. At what cost?