Eight celebrities embark on a 12-day expedition in the rainforest of Costa Rica, where they must learn to navigate difficult terrain, build shelters, make fire and eat the food that nature provides.

Tensions run high as the celebrities navigate their way through dense jungle and descent a 120ft waterfall.

Tensions reach boiling point as the celebrities face their toughest challenge yet, using their newly acquired knot skills to transform two unstable canoes and travel across to an island two miles away.

.As the remaining six celebrities pass the halfway point of the 12-day mission, their rope skills are used to navigate the tight spaces and waterfall descents ahead.

In the penultimate stretch of their journey, the four remaining celebrities must cross a 200ft ravine one by one on a rope.

With the finish line in sight, the final three contestants fight it out to become Bear Grylls' Mission Survivor. They must abseil down a 300ft waterfall before facing one final challenge.