The first manned mission to Mars is now approaching the red planet. The crew includes top-flight scientists and a young female psychiatrist, responsible for their mental health. But just as they are about to land, something goes wrong.

Five years have passed since the return of Ulysses' crew to Earth. The memories and traumas of the first trip to Mars still haunt every survivor of the mission. But a vision of Jeanne shared by each of them will change everything. From now on, they are sure of it: she is alive. Somewhere. Under the aegis of William Meyer and in the greatest secrecy, a new mission for the Red Planet is launched to find it. But the billionaire did not reveal all his secrets to his crew. Mars no more.