Famed adventurer and survivalist Bear Grylls raises his star power in this show, taking six celebrities - including Channing Tatum and Zac Efron - on one-on-one, 48-hour journeys into some of the wildest, most-remote locations in the United States and around the world. From skydiving into the Catskill Mountains, to battling the weather in Scotland, each episode chronicles a celebrity's experience of pushing body and mind to the limit in order to successfully complete the adventure.