EpicTV invited four of the world's best climbers - Emily Harrington, Alex Megos, Hazel Findlay and Tommy Caldwell - to the birthplace of modern mountaineering, Chamonix, France, to test their skills in a challeng like no other: 4 days, 4 different routes in 4 completely different climbing styles. The climbers will try to free an unclimbed multipitch, open a secret boulder garden, climb a classic trad line on top of Aiguille du Midi and send some of the area's hardest sport routes. Tune in for the year's coolest climbing challenge!