A grueling five-mile hike into the snake-filled jungles of the Palawan island pushes the three remaining teams of survivalists. The one-day journey turns into two days of chaos and one survivalist must be medically evacuated from the challenge.

Stalked by the deadliest animals including lions, spitting cobras and bull sharks, survivalists' every step could bring disaster. To make it 40 days, they must use their skills to avoid becoming prey while hunting the most dangerous creatures.