Bear Grylls takes singer-actress Cynthia Erivo to the highest mountains in Wales, where Bear trained in the British Special Forces. Bear teaches Cynthia how to rappel into and navigate a labyrinth of caves before they traverse a frigid and thunderous waterfall. On day two, Cynthia uses the skills she learned on day one to embark on her own, find Bear, and make it to their extraction.

Bear Grylls takes actor, activist and author Russell Brand on an adventure down the jagged coast of a secluded Scottish isle in search of 16th-century castle ruins to shelter in. Along the way, Bear teaches the brash and bombastic Brand survival skills that dredge up a long-forgotten but highly charged fear he must overcome to reach his extraction.