Marc Levy, the most popular French writer in the world, once again takes us into the world of noble hackers exposing the conspiracy of "predators" - corrupt politicians and big business sharks. The Robin Hoods of the digital world, members of the top-secret Group 9, meet to carry out the greatest cyber attack in history... However, only seven arrive at the mansion near Kiev. Maya, the eighth member of Group 9, remains out of touch, and for good reason. But who is the mysterious ninth hacker? Who sends anonymous messages that complete the picture of a predatory conspiracy like the missing pieces of a puzzle? Who warns of danger at the last minute? And why didn’t he show up for the general meeting? A new kaleidoscope of cities and countries, new risky adventures, new dangerous opponents - and new feelings.