When Jo Fuller takes a summer job on a campsite in the Swiss alpine valley of Lauterbrunnen, she does not expect her whole understanding of the world to be turned upside down. A camper dies in suspicious circumstances. With three broken individuals - Bob, Paula and Werner - Jo discovers a strange alternative world at the top of the Schilthorn mountain. Each of them faces death at the hands of the inhabitants of the alternate world, intent on preserving their secret. But Bob has something that may keep them alive. Amongst the beautiful Swiss mountains, each of the four must face up to their fears and survive. This fast-paced fantasy thriller leaves Jo, Bob, Paula and Werner unsure who to trust as they attempt to uncover the secret of the mountain before it is too late.