When the stakes are life and death, you'd be surprised at the lengths you'd go to survive. Pain, hunger, and fear can seem like paralyzing obstacles, but in the face of real danger, they're actually what keeps us alive. Every Monday, we'll follow a different survivor's visceral and inspiring fight for life, and examine how the trauma-impacted them forever. These are the stories of what happens when the human self-preservation instinct is pushed to its limit, through the eyes of the world's most resilient survivors.