SEASON FOUR
401: Nüwa
The crew onboard the moon base Guang Han Gong-1 witness events on Earth that will change the course of history.
402: WORMWOOD
The inhabitants of Colony One assess recent revelations and try to carve a path forward.
403: Homecoming
After launching from Mars and enduring several months in transit, MECTI-1 astronauts Rachel Yoshida and Fedor Morozev return to Earth.
404: Refugees
Rachel and Fedor find survivors on post-GRB Earth.
405: GAMBIT
The people of Earth begin plans for an exodus, while the crew of Colony One prepares settlements on Mars.
406: TAKEOFF
Work on the detailed plan for starting a Martian civilization commences.
407: MIRAGE
Commander Jiao Li struggles to find remnants of life on Earth as
work is underway for an exodus to Mars.
408: FERMI
Rachel, Jiao and the refugees on Earth weigh the possibility of extinction as they prepare to leave Earth forever.
409: Horizon
Colony One prepares to welcome the refugees from Earth as the thermonuclear extraction team begins operations.
Season Four Extras
