The crew falls through a ripple in space and ends up in an unknown universe. They struggle to find new ripples but without much luck. When they finally manage to track one down they no longer have the fuel they need to travel through it and it turns out it doesn't lead home but to another more hostile universe. The season ends with the introduction of an alien that is being hunted. It appears that their journey home isn't going to be as easy as they might have thought.