Watch Bear Grylls: Misson Survive Online for free. 8 Celebrities take part in a 12-day survival mission with Bear Grylls and to stay alive they have to learn to navigate difficult terrain, build shelter, make fire and eat food that nature provides. At the end of each show one of them is eliminated from the competition until the final three battle it out to be crowned the series champion. Emilia Fox, Laurence Fox, Max George, Kelly Holmes, Jamelia, Tom Rosenthal, Vogue Williams and Mike Tindall are the celebrities taking part.