Jack Ryan investigates a secret plan to restore the Soviet Empire through war, embarking on a dangerous op with the help of Rome Station Chief Elizabeth Wright and Head of Russia House James Greer. Meanwhile, an assassination on home soil forces Czech President Alena Kovac into a dangerous position with Russia.

Jack, out in the cold and on the run after the fallout from his failed operation in Greece, must evade authorities both foreign and domestic before receiving help from an old friend.

In Budapest, Jack and Mike plan a sting on a slippery arms dealer to ascertain the whereabouts of the Sokol nuclear device, as Greer discovers some intriguing and potentially incriminating information on Petr Kovac.

Jack races to stop the detonation of the Sokol nuclear device, which has traveled to the Czech Republic. Petr and Luka’s secret histories come to the surface in a deadly reckoning.