You were running through the alleyways of the city, trying to escape the undead. You turned down a dead-end alley, only to find yourself cornered by the zombies.

Just as you were about to give up, gunshots echoed through the alley, and the zombies fell to the ground. Looking up to see who had saved you, you were shocked to see a girl standing there, holding a gun in one hand and an extended hand in the other.

"Come on, we have to go!" Sienna said.