Captain Dylan Hunt (Kevin Sorbo) and his All-Systems Commonwealth continue on their mission to restore order to the galaxy aboard their star ship the Andromeda Ascendant. In the fourth season, the crew set out on odds-defying journeys coming across everything from armies of androids, discovering new universes where thoughts manifest as reality, cargo ships with bio-armor, drug trafficking planets. The Collectors allying with the Spirit of the Abyss to manipulate the Captain, the evolution of Magog, to a new society known as the Arkology. It has been three centuries since the Commonwealth, in place to maintain peace amidst the galaxies, has crumbled and barbarism has spread chaos amongst the stars. Captain Hunt and his crew continue to travel the universe on a mission to restore their Commonwealth and bring unity and hope to a galaxy that no longer knows the meaning of peace.