A team of eight astronauts, embarking on a six-year journey to explore Venus and other planets in the solar system, find their lives and destinies intertwined and carefully directed, not only by Mission Control officials on Earth, but also by an unseen force which is much closer and far more powerful.

With the Antares en route to Venus, the crew finds that some past choices, combined with an unknown element in the ship's mysterious Storage Pod 4, lead to a complex web of dreams, desires and illusions that result in a life-threatening crisis.

Taboos are broken and lines are crossed as personal and professional relationships aboard the Antares and on Earth continue to intensify, while the unseen power behind the mission begins to create both cellular and psychological transformations among the astronauts.

The first major crisis arises for the crew of the Antares when the ships operating system begins inexplicably shutting down, causing a sudden failure of power, heat and gravity controls and making everyone aboard plunge into chaos during the desperate search for a solution.

The Antares crosses a point of no return and turning back to Earth is no longer an option. In the meantime, each of the crew members has to cope with a personal point of no return.

While getting closer to Venus, some crew members are confronted with memories of past actions and struggle with guilt. When one of them gets into a life-threatening situation, the team unites to save her.

The crew aboard the Antares begin seeing hallucinations during Halloween, which could have a detrimental effect on Goss' plans of promoting the mission in front of worldwide audience.

The prediction of a solar flare has the Antares on high alert due to the chance of deadly radiation levels. Meanwhile, a mysterious force in Pod 4 sends out an irresistible siren call.

Young Eve was the first one to get in telephatic contact with the being Beta many years ago when she was on humanitarian mission. Antares crew wants to know what Beta exactly is.

The crew prepares for the Venus landing, election day, and they continue to deal with the news of their real mission.

The Antares crew has to face the isolation and loneliness of space during the final hours before the Venus landing.

The day of the landing on Venus has come. The day that will change their lives eventually.

Zoe starts her seemingly hopeless walk on the surface of Venus, guided by a sound only she can hear, while her previous relationship with Donner is revealed to all.