The year is 1924. An expedition to the top of the world's tallest mountain is on hold after the shocking disappearance of two participants. By next year, three climbers - a British poet, a French guide from Chamonix and an American idealist - are going on a new trip to the summit. Money for the expedition is donated by Lady Bromley, whose son also disappeared on Mount Everest in 1924. Young Bromley is most likely dead, but his mother refuses to believe it and equips brave men in the hope that they will bring her beloved son home. Deep in Tibet, three climbers, joined by the missing boy's cousin, discover that someone haunts them all night... or something. Soon this nightmare becomes a matter of life and death - what lurks in the snowy fog? And what is behind the mysterious disappearances? Making their way to the “top of the world”, daredevils uncover a secret far more disgusting than any of the most repulsive mythical creatures.