A secret element in Storage Pod 4 affects the crew which leads to a dangerous crisis. Meanwhile, Ted's wife Eve Shaw reveals the true nature of the mission to him.

Personal and professional relationships get more intense on Earth and aboard the Antares. In the meantime, the Antares' crew undergoes cellular and psychological transformations which is caused by the unseen power behind the mission.

The crew of the Antares learns about Pod 4 and the real reason for their mission to Venus.