Dr. Rush directs a shuttle to a planet inaccessible by Stargate -- but a crash landing threatens to strand those on board. Meanwhile, Rush makes a stunning discovery on Destiny, and Young must decide what to do with his prisoners.
Chloe's increasingly erratic behavior leads the crew to suspect that she may be under alien influence. Eli returns home when he learns that his mother has fallen ill, and Camille finds Sharon struggling in her absence.