When Higgins' actions during battle compromise the safety of the Roughnecks, Lt. Razak wants to have him shipped back to Earth. But after Rico stands up for him, Lt. Razak comes up with another plan -- Rico will train Higgins and turn him into an efficient solider. Easier said than done, however. Meanwhile, the Roughnecks must rescue a Demolition Squad trapped in a canyon by a Warrior Bug ambush. But when they arrive, the Roughnecks suddenly come under attack by a bug no one's seen before -- the flying hopper, armed with a razor-sharp stinger. Laser weapons don't seem to work on these bugs, and eventually the Roughnecks discover the Hoppers actually absorb the laser energy, growing stronger.