Sierra, dressed in a bloodstained Hazmat suit, cautiously navigates a seemingly-abandoned military camp where a dead ...

Aware of the fact that Gabi is spying on her, Sierra dresses a walker up in her Hazmat suit and uses it as a distract...

Gabi and Sierra enter one of the watchtowers of the military camp and survey the damage. Sierra cleans her knife in t...

Gabi and Sierra are trudging down a road towards the boarder. They seem to be in the middle of a discussion, but Sier...

Gabi and Sierra enter a construction site. Sierra is wondering how far it (the tunnel) is, and Gabi assures her that ...

The shooter of the chained infected is revealed to be Colton, Gabi's boyfriend. Colton and Gabi embrace, relieved to ...

Colton brings Sierra and Gabi to the tunnel and tells Gabi to go down first. She seems concerned about Sierra, and Co...

Sierra descends the ladder into the tunnel where she in confronted by Gabi while Colton keeps shouting from above tha...

The tripwire was activated and caused an explosion. Sierra and Gabi wake up with ringing ears, coughing, and covered ...

Colton roughly pulls Gabi and holds her by her face, repeating "Didn't I tell you to wait for me?" They hear Sierra g...

Sierra limps around the tunnel, coming across a well lit area full of tools and pipes. She hear Colton talking to Gab...

Gabi and Colton are walking through the tunnel when an unknown voice calls out.

Colton tries to convince Gabi that he wont hurt her and that she needs him. Gabi responds that she doesn't believe hi...

A mining cart rattles down the rails, drawing the attention of the border patrol guard who is searching for whoever s...

Colton is still holding his gun on Gabi and tells her "You're not worth it, babe," and he prepares to fire, but is at...

Gabi follows Sierra to a ladder that leads back above ground, however, they must sneak past a zombie eating one of th...