An elite endurance athlete and a sensitive stay-at-home dad team up in a rugged Belize jungle where jaguars, venomous snakes, falling trees, and powerful storms threaten their evolving partnership.

A special ops vet teams up with a single mom to fight torrential rains, flash floods, and sickness in Thailand's Sai Rung River Valley. It's a race against time as the pair puts their skills to the test before the river leaves them stranded from the crew.