SGU follows a band of soldiers, scientists and civilians who must fend for themselves after they are forced through a Stargate when their hidden base is attacked. The survivors, led by Dr. Nicholas Rush (Carlyle), emerge aboard an ancient ship, which is locked on an unknown course and unable to return to Earth.
Phillips will play Col. Telford, a lifelong military man and the chosen leader of the ill-fated expedition. Ming-Na will play Camile Wray, a human resources executive with the international oversight committee that governs the Stargate program.
Levesque ("Smallville") will play Chloe Armstrong, the daughter and aide of a U.S. senator. Huffman ("Smallville") will play MSgt. Tamara Johansen, a field medic assigned to treat the seriously wounded.