While Jeanne must pick her path, Peter wavers about helping her. Alice pushes for teamwork despite having the most to lose.

Back from Mars alone, Sam finds Earth different from the world he left, so even the limited truths he can share seem insane. Inquisitor Peter Kaminski is intrigued.

A provocative encounter revives traumatic memories for Peter, who seeks to exercise control over Sam’s situation, but fate intervenes.

The crew follow Jeanne's footsteps.

Crew members discover traces of life in a strange forest; William Meyer decides to send Sam back to the spaceship.

Komarov tells Jeanne that Ivan Goldstein did not lie to her. Once on the other side of the portal, the crew does not know how to react to Alice's revelations. The other side of the portal.

Meyer realizes it was a mistake to bring his daughter with him; Alan tells Sam to search for Alessandra.

Sam and Alan raise questions about the origin of the portal; Jeanne is determined to return to Earth, but must search for someone first.

Jeanne, Simon and Gemma enter the excavated mountain discovering underground monuments and traces of a past life. Inside the ship, the crew members are under the threat of Doisneau and Wayne. Suddenly Irene wakes up.

Jeanne and Simon discover Komarov on the mysterious glacier who reveals what his mission is while Jeanne learns more about what is required of her, becoming the Z2 crew’s prime target. On the ship, Wayne is now alone against the crew of Ulysses while Alessandra tries to convince him to spare their lives - desperate measures take a terrible toll.

Jeanne encounters a mysterious man who seems to know her well while the Nausicaa mission is about to land on Mars.

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To save their stricken craft a sub-team seeks salvage, but the trio’s discovery of a body means a surprisingly harsh reception on their return.

Vladimir is not all he appears to be as natural disaster threatens the entire mission.

The crew has a sobering encounter with potential rescuers, and Jeanne tries to hypnotize the enigmatic Komarov.

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.

Jeanne is shaken after the failed attempt to hypnotize Komarov enduring memory flashbacks from long ago. Gemma Williams from the Zillion 2 mission arrives and tries to reassure the Ulysse's crew about Goldstein's intentions. Meanwhile, Gramat and Yann find out that Meyer knows a lot more about the mysterious discoveries on Mars than he admits.

Caught in a predicament, Jeanne is overwhelmed by the memories of her father. In Moscow in the 1960s, Vladimir Komarov is told that the Soyouz mission is doomed to failure. Meanwhile, the crew of Odysseus are encountering more and more problems with the Americans.

Two new crew members discover each other while organizing a new mission to Mars at the Meyer Space Center.

While the space ship approaches Mars, Alessandra has new visions. In her community, Jeanne is facing the consequences of Atar's death.

With new-found knowledge, Peter tracks down some familiar faces, until he meets his match and a deadly threat.

Alice discovers uncomfortable genetic facts, causing emotional confrontations, while Sam’s cause of death is revealed, along with another mystery.

A violent encounter lends urgency to Peter’s quest, while Jeanne’s mistrust increases, despite the reassurances of a companion.

Jeanne and Alice are distressed, each trying to make sense of an insane situation, while Peter’s fate is unknown.

The emotional toll on captive Jeanne makes her dangerously unstable, and a buried memory reveals the troubling truth of a death.