Director von Braun opposes President Nixon's directive, with dire consequences.

Ed handles a trespasser. Ellen and Deke chart a new course without Mission Control.

Margo must lead a seemingly impossible mission. Danielle wants to return to the moon. Gordo grapples with life on Earth.

Tensions between the U.S. and the Soviet Union reach an all-time high on the moon, throwing multiple missions into jeopardy.

Nearly 10 years have passed. Danielle and Ed attend a celebration, where things take a terrifying turn.

The Martian crew debates how to save the life of one of their own.

Eight years later, a new mission begins: Capture an asteroid. Aleida and Danielle are still haunted by events from the past.

Tensions on Earth and Mars come to a head.