Razak and Higgins spot a huge Bug migration and call in an air strike, but are trapped in the path of destruction when their skimmer crashes.

When a Cyborg nicknamed Chas (Cybernetic Humanoid Assault System) is assigned to the Roughnecks, he is befriended by Higgins, who views the robot as a kindred outsider, but Rico is mistrustful.

While returning from a mission, the Roughnecks are attacked and captured by a contingent of the humanoid Skinnies. Tensions mount in their prison cell, and while Carl and Brutto are being interrogated, the rest of the squad works on an escape plan.