Last Stand - S1.E12

Hel and Cleo follow Sarge on a mission to assist Jake Lawson, a famous Protector of the upper levels. They find him and a man named Jerbo under heavy fire from underworld mercenaries, and they're shocked to find that the cocky Lawson is protecting dozens of barrels of plutonium. As Jerbo struggles to erect a force field to protect the plutonium, Sarge tells Lawson he was her role model... despite the fact that he once shot her. When a relay switch gets fried in a firefight, one of the groups will have to stay behind to activate the force field, but that person will be trapped if they do. Lawson draws the short straw and Sarge kisses him before they mask their escape, leaving him behind. Back in their headquarters, Voice finds an ancient tunnel leading to a crypt with the plutonium. Acting on a hunch Sarge goes back alone, confronting Jake; he planned to sell the plutonium to buy his own underground level. They fight and Sarge shoots Lawson, walking away as he dies.