Watch 123Movies. Xavier de Le Rue and Sam Anthamatten are known for bringing speed and fluidity into the big mountain environment. Following Mission Antarctic, Mission Steeps is the second chapter of the Mission Series. Follow some of the most progressive riders on their way to redefine steeps riding on breathtaking terrain and challenging conditions. Mission Steeps is not only a quest to the most radical terrain but also a journey and documentary on how they get there and their singular approach to the mountain.